To determine which element loses electrons and how many electrons are lost per atom in an ionic compound K 2 S . Concept Introduction: The electrons present in the outermost shell of the atom are known as valence electrons. Valency electrons are important because: The valence electrons decide the reactivity of an element. The valence electrons decide the manner in which an atom forms a bond with another atom. The valence electron in an atom decides the combining capacity of the element. Except inner transition elements valence electrons are present in s or p subshells of elements. For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons. The group number is similar to number of valence electrons of an atom.

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Answer 1

Question

Chapter 4, Problem 4.71EP

(a)

Interpretation Introduction

Interpretation:

To determine which element loses electrons and how many electrons are lost per atom in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

(b)

Interpretation Introduction

Interpretation:

To determine which element gains electrons and how many electrons are gained per atom in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

(c)

Interpretation Introduction

Interpretation:

To determine the identity and charge on positive ions present in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

(d)

Interpretation Introduction

Interpretation:

To determine the identity and charge on negative ions present in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

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Experiment: Each team will be provided with 5g of a mixture of acetanilide and salicylic acid. You will divide it into three 1.5 g portions in separate 125 mL Erlenmeyer flasks savıng some for melting point analysis. Dissolve the mixture in each flask in ~60mL of DI water by heating to boiling on a hotplate. Take the flasks off the hotplate once you have a clear solution and let them stand on the bench top for 5 mins and then allow them to cool as described below. Sample A-Let the first sample cool slowly to room temperature by letting it stand on your lab bench, with occasional stirring to promote crystallization. Sample B-Cool the second sample 1n a tap-water bath to 10-15 °C Sample C-Cool the third sample in an ice-bath to 0-2 °C Results: weight after recrystalization and melting point temp. A=0.624g,102-115° B=0.765g, 80-105° C=1.135g, 77-108 What is the percent yield of A,B, and C.

Answer 2

Question

Chapter 4, Problem 4.71EP

(a)

Interpretation Introduction

Interpretation:

To determine which element loses electrons and how many electrons are lost per atom in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

(b)

Interpretation Introduction

Interpretation:

To determine which element gains electrons and how many electrons are gained per atom in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

(c)

Interpretation Introduction

Interpretation:

To determine the identity and charge on positive ions present in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

(d)

Interpretation Introduction

Interpretation:

To determine the identity and charge on negative ions present in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

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Answer 3

Question

Chapter 4, Problem 4.71EP

(a)

Interpretation Introduction

Interpretation:

To determine which element loses electrons and how many electrons are lost per atom in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

(b)

Interpretation Introduction

Interpretation:

To determine which element gains electrons and how many electrons are gained per atom in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

(c)

Interpretation Introduction

Interpretation:

To determine the identity and charge on positive ions present in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

(d)

Interpretation Introduction

Interpretation:

To determine the identity and charge on negative ions present in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

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Answer 4

Question

Chapter 4, Problem 4.71EP

(a)

Interpretation Introduction

Interpretation:

To determine which element loses electrons and how many electrons are lost per atom in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

(b)

Interpretation Introduction

Interpretation:

To determine which element gains electrons and how many electrons are gained per atom in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

(c)

Interpretation Introduction

Interpretation:

To determine the identity and charge on positive ions present in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

(d)

Interpretation Introduction

Interpretation:

To determine the identity and charge on negative ions present in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

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Answer 5

Chapter 4, Problem 4.71EP

(a)

Interpretation Introduction

Interpretation:

To determine which element loses electrons and how many electrons are lost per atom in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

(b)

Interpretation Introduction

Interpretation:

To determine which element gains electrons and how many electrons are gained per atom in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

(c)

Interpretation Introduction

Interpretation:

To determine the identity and charge on positive ions present in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

(d)

Interpretation Introduction

Interpretation:

To determine the identity and charge on negative ions present in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

Answer 6

Chapter 4, Problem 4.71EP

(a)

Interpretation Introduction

Interpretation:

To determine which element loses electrons and how many electrons are lost per atom in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

Answer 7

Chapter 4, Problem 4.71EP

(a)

Interpretation Introduction

Interpretation:

To determine which element loses electrons and how many electrons are lost per atom in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

Answer 8

(b)

Interpretation Introduction

Interpretation:

To determine which element gains electrons and how many electrons are gained per atom in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

Answer 9

(b)

Interpretation Introduction

Interpretation:

To determine which element gains electrons and how many electrons are gained per atom in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

Answer 10

(c)

Interpretation Introduction

Interpretation:

To determine the identity and charge on positive ions present in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

Answer 11

(c)

Interpretation Introduction

Interpretation:

To determine the identity and charge on positive ions present in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

Answer 12

(d)

Interpretation Introduction

Interpretation:

To determine the identity and charge on negative ions present in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

Answer 13

(d)

Interpretation Introduction

Interpretation:

To determine the identity and charge on negative ions present in an ionic compound K2S.

Concept Introduction:

The electrons present in the outermost shell of the atom are known as valence electrons.

Valency electrons are important because:

The valence electrons decide the reactivity of an element.

The valence electrons decide the manner in which an atom forms a bond with another atom.

The valence electron in an atom decides the combining capacity of the element.

Except inner transition elements valence electrons are present in s or p subshells of elements.

For inner transition elements incompletely filled d or f subshells electrons are considered as valence electrons.

The group number is similar to number of valence electrons of an atom.

Answer 14

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Answer 25

Ch. 4.1 - Prob. 1QQ Ch. 4.1 - Prob. 2QQ Ch. 4.1 - Prob. 3QQ Ch. 4.2 - How many valence electrons are present in an atom...Ch. 4.2 - Prob. 2QQ Ch. 4.2 - Prob. 3QQ Ch. 4.2 - Prob. 4QQ Ch. 4.2 - Which of the following elements would have the...Ch. 4.3 - Prob. 1QQ Ch. 4.3 - Prob. 2QQ

Solution Summary: The author explains that valence electrons decide the reactivity of an element, the manner in which an atom forms a bond, and the combination capacity of the element.

Chapter 4 Solutions