(a) Interpretation: To state whether the given statement is true or false. Effective nuclear charge stays about the same when one goes down a group. Concept introduction: The Modern Periodic law states that the physical and chemical properties of the elements are a periodic function of their atomic numbers . This means that changes in the chemical properties of various elements present in the modern periodic table are due to their atomic numbers. Atomic number of an element gives the total number or electrons or protons present in that atom. The main cause of periodicity is the repetition of similar outer electronic configuration after regular intervals.

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Answer 1

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Chapter 6, Problem 74QAP

Interpretation Introduction

(a)

Interpretation:

To state whether the given statement is true or false.

Effective nuclear charge stays about the same when one goes down a group.

Concept introduction:

The Modern Periodic law states that the physical and chemical properties of the elements are a periodic function of their atomic numbers. This means that changes in the chemical properties of various elements present in the modern periodic table are due to their atomic numbers. Atomic number of an element gives the total number or electrons or protons present in that atom. The main cause of periodicity is the repetition of similar outer electronic configuration after regular intervals.

Interpretation Introduction

(b)

Interpretation:

To state whether the given statement is true or false.

Group 17 elements have seven electrons in their outer level.

Concept introduction:

Outermost electrons are those which take part in bonding. Each element has different number of outermost electrons depending upon the group to which it belongs and its electronic configuration as well.

Interpretation Introduction

(c)

Interpretation:

To state whether the given statement is true or false.

Energy is given off when a electron is removed from an atom.

Concept introduction:

Electrons are held in an atom by stronger forces of attraction present between the nucleus and the electrons. For the removal of electrons energy is to be given off to overcome these attractive forces.

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Answer 2

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Chapter 6, Problem 74QAP

Interpretation Introduction

(a)

Interpretation:

To state whether the given statement is true or false.

Effective nuclear charge stays about the same when one goes down a group.

Concept introduction:

The Modern Periodic law states that the physical and chemical properties of the elements are a periodic function of their atomic numbers. This means that changes in the chemical properties of various elements present in the modern periodic table are due to their atomic numbers. Atomic number of an element gives the total number or electrons or protons present in that atom. The main cause of periodicity is the repetition of similar outer electronic configuration after regular intervals.

Interpretation Introduction

(b)

Interpretation:

To state whether the given statement is true or false.

Group 17 elements have seven electrons in their outer level.

Concept introduction:

Outermost electrons are those which take part in bonding. Each element has different number of outermost electrons depending upon the group to which it belongs and its electronic configuration as well.

Interpretation Introduction

(c)

Interpretation:

To state whether the given statement is true or false.

Energy is given off when a electron is removed from an atom.

Concept introduction:

Electrons are held in an atom by stronger forces of attraction present between the nucleus and the electrons. For the removal of electrons energy is to be given off to overcome these attractive forces.

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Answer 3

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Chapter 6, Problem 74QAP

Interpretation Introduction

(a)

Interpretation:

To state whether the given statement is true or false.

Effective nuclear charge stays about the same when one goes down a group.

Concept introduction:

The Modern Periodic law states that the physical and chemical properties of the elements are a periodic function of their atomic numbers. This means that changes in the chemical properties of various elements present in the modern periodic table are due to their atomic numbers. Atomic number of an element gives the total number or electrons or protons present in that atom. The main cause of periodicity is the repetition of similar outer electronic configuration after regular intervals.

Interpretation Introduction

(b)

Interpretation:

To state whether the given statement is true or false.

Group 17 elements have seven electrons in their outer level.

Concept introduction:

Outermost electrons are those which take part in bonding. Each element has different number of outermost electrons depending upon the group to which it belongs and its electronic configuration as well.

Interpretation Introduction

(c)

Interpretation:

To state whether the given statement is true or false.

Energy is given off when a electron is removed from an atom.

Concept introduction:

Electrons are held in an atom by stronger forces of attraction present between the nucleus and the electrons. For the removal of electrons energy is to be given off to overcome these attractive forces.

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Answer 4

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Chapter 6, Problem 74QAP

Interpretation Introduction

(a)

Interpretation:

To state whether the given statement is true or false.

Effective nuclear charge stays about the same when one goes down a group.

Concept introduction:

The Modern Periodic law states that the physical and chemical properties of the elements are a periodic function of their atomic numbers. This means that changes in the chemical properties of various elements present in the modern periodic table are due to their atomic numbers. Atomic number of an element gives the total number or electrons or protons present in that atom. The main cause of periodicity is the repetition of similar outer electronic configuration after regular intervals.

Interpretation Introduction

(b)

Interpretation:

To state whether the given statement is true or false.

Group 17 elements have seven electrons in their outer level.

Concept introduction:

Outermost electrons are those which take part in bonding. Each element has different number of outermost electrons depending upon the group to which it belongs and its electronic configuration as well.

Interpretation Introduction

(c)

Interpretation:

To state whether the given statement is true or false.

Energy is given off when a electron is removed from an atom.

Concept introduction:

Electrons are held in an atom by stronger forces of attraction present between the nucleus and the electrons. For the removal of electrons energy is to be given off to overcome these attractive forces.

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Answer 5

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Answer 6

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Answer 7

Chapter 6, Problem 74QAP

Interpretation Introduction

(a)

Interpretation:

To state whether the given statement is true or false.

Effective nuclear charge stays about the same when one goes down a group.

Concept introduction:

The Modern Periodic law states that the physical and chemical properties of the elements are a periodic function of their atomic numbers. This means that changes in the chemical properties of various elements present in the modern periodic table are due to their atomic numbers. Atomic number of an element gives the total number or electrons or protons present in that atom. The main cause of periodicity is the repetition of similar outer electronic configuration after regular intervals.

Interpretation Introduction

(b)

Interpretation:

To state whether the given statement is true or false.

Group 17 elements have seven electrons in their outer level.

Concept introduction:

Outermost electrons are those which take part in bonding. Each element has different number of outermost electrons depending upon the group to which it belongs and its electronic configuration as well.

Interpretation Introduction

(c)

Interpretation:

To state whether the given statement is true or false.

Energy is given off when a electron is removed from an atom.

Concept introduction:

Electrons are held in an atom by stronger forces of attraction present between the nucleus and the electrons. For the removal of electrons energy is to be given off to overcome these attractive forces.

Answer 8

Chapter 6, Problem 74QAP

Interpretation Introduction

(a)

Interpretation:

To state whether the given statement is true or false.

Effective nuclear charge stays about the same when one goes down a group.

Concept introduction:

The Modern Periodic law states that the physical and chemical properties of the elements are a periodic function of their atomic numbers. This means that changes in the chemical properties of various elements present in the modern periodic table are due to their atomic numbers. Atomic number of an element gives the total number or electrons or protons present in that atom. The main cause of periodicity is the repetition of similar outer electronic configuration after regular intervals.

Answer 9

Chapter 6, Problem 74QAP

Interpretation Introduction

(a)

Interpretation:

To state whether the given statement is true or false.

Effective nuclear charge stays about the same when one goes down a group.

Concept introduction:

The Modern Periodic law states that the physical and chemical properties of the elements are a periodic function of their atomic numbers. This means that changes in the chemical properties of various elements present in the modern periodic table are due to their atomic numbers. Atomic number of an element gives the total number or electrons or protons present in that atom. The main cause of periodicity is the repetition of similar outer electronic configuration after regular intervals.

Answer 10

Interpretation Introduction

(b)

Interpretation:

To state whether the given statement is true or false.

Group 17 elements have seven electrons in their outer level.

Concept introduction:

Outermost electrons are those which take part in bonding. Each element has different number of outermost electrons depending upon the group to which it belongs and its electronic configuration as well.

Answer 11

Interpretation Introduction

(b)

Interpretation:

To state whether the given statement is true or false.

Group 17 elements have seven electrons in their outer level.

Concept introduction:

Outermost electrons are those which take part in bonding. Each element has different number of outermost electrons depending upon the group to which it belongs and its electronic configuration as well.

Answer 12

Interpretation Introduction

(c)

Interpretation:

To state whether the given statement is true or false.

Energy is given off when a electron is removed from an atom.

Concept introduction:

Electrons are held in an atom by stronger forces of attraction present between the nucleus and the electrons. For the removal of electrons energy is to be given off to overcome these attractive forces.

Answer 13

Interpretation Introduction

(c)

Interpretation:

To state whether the given statement is true or false.

Energy is given off when a electron is removed from an atom.

Concept introduction:

Electrons are held in an atom by stronger forces of attraction present between the nucleus and the electrons. For the removal of electrons energy is to be given off to overcome these attractive forces.

Answer 14

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Answer 16

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Answer 17

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Solution Summary: The author states that the physical and chemical properties of various elements present in the modern periodic table are a periodic function of their atomic numbers.

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