Chapter 2, Problem 2.55SP

Interpretation Introduction

(a)

Interpretation:

The characteristic that was used to organize elements in periodic table should be determined.

Concept introduction:

The element is simplest unit from matter that can’t be furthermore broken. The examples of elements are hydrogen, carbon, and oxygen. The elements of each group in periodic table are arranged in a way so that all the elements within group have same chemical valency. Due to this, these elements of same group show similar chemical properties. For example group 1A, known as alkali metals, all elements present in this group are soft and silvery metal. They all react violently with water.

Interpretation Introduction

(b)

Interpretation:

The name of horizontal row in periodic table should be determined.

Concept introduction:

The element is simplest unit from matter that can’t be further more broken. The examples of elements are hydrogen, carbon, and oxygen. The elements of each group in periodic table are arranged in a way so that all the elements within group have same chemical valency. Due to this, these elements of same group show similar chemical properties. For example group 1A, known as alkali metals, all elements present in this group are soft and silvery metal. They all react violently with water.

Interpretation Introduction

(c)

Interpretation:

The name of vertical column in periodic table should be determined.

Concept introduction:

The element is simplest unit from matter that can’t be further more broken. The examples of elements are hydrogen, carbon, and oxygen. The elements of each group in periodic table are arranged in a way so that all the elements within group have same chemical valency. Due to this, these elements of same group show similar chemical properties. For example group 1A, known as alkali metals, all elements present in this group are soft and silvery metal. They all react violently with water.

d)

Interpretation Introduction

Interpretation:

The name of groups from 1A-8A in periodic table should be determined.

Concept introduction:

The element is simplest unit from matter that can’t be further more broken. The examples of elements are hydrogen, carbon, and oxygen. The elements of each group in periodic table are arranged in a way so that all the elements within group have same chemical valency. Due to this, these elements of same group show similar chemical properties. For example group 1A, known as alkali metals, all elements present in this group are soft and silvery metal. They all react violently with water.

Interpretation Introduction

(e)

Interpretation:

The name of groups from 1B-8B in periodic table should be determined.

Concept introduction:

The element is simplest unit from matter that can’t be further more broken. The examples of elements are hydrogen, carbon, and oxygen. The elements of each group in periodic table are arranged in a way so that all the elements within group have same chemical valency. Due to this, these elements of same group show similar chemical properties. For example group 1A, known as alkali metals, all elements present in this group are soft and silvery metal. They all react violently with water.

Interpretation Introduction

(f)

Interpretation:

The classification of three elements $\text{Mo}$, $\text{Br}$, and $\text{Si}$ into metal, semimetal, and nonmetal should be determined.

Concept introduction:

The element is simplest unit from matter that can’t be further more broken. The examples of elements are hydrogen, carbon, and oxygen. The elements of each group in periodic table are arranged in a way so that all the elements within group have same chemical valency. Due to this, these elements of same group show similar chemical properties. For example group 1A, known as alkali metals, all elements present in this group are soft and silvery metal. They all react violently with water.

Interpretation Introduction

(e)

Interpretation:

The symbol of element located in 3^rd period and group 4A in periodic table should be determined.

Concept introduction:

The element is simplest unit from matter that can’t be further more broken. The examples of elements are hydrogen, carbon, and oxygen. The elements of each group in periodic table are arranged in a way so that all the elements within group have same chemical valency. Due to this, these elements of same group show similar chemical properties. For example group 1A, known as alkali metals, all elements present in this group are soft and silvery metal. They all react violently with water.