Chapter 3, Problem 40A

(a)

Interpretation Introduction

Interpretation:

The chemical symbol, group number, atomic number, and nature of rubidium needs to be explained.

Concept Introduction :

The periodic table is a proper arrangement of the elements according to their increasing atomic number. The elements of same group have similar properties. The periodic table is divided into two sections, one is a vertical column and the other one is horizontal row.

Answer to Problem 40A

Chemical symbol= $\text{Ru}$ , Atomic number= $\text{37}$ , Group number= $\text{1}$ , Nature= Metal.

Explanation of Solution

According to the nature of elements, different groups are categorized as alkali metals, alkaline earth metals, halogen, inert gases, etc. Elements are arranged in a vertical column known as group. Also, elements are arranged in a horizontal row known as a period.

The chemical symbol, group number, atomic number, and nature of rubidium:

Element	Chemical symbol	Atomic number	Group number	Metal / non-metal/ metalloid
Rubidium	$\text{Ru}$	$\text{37}$	$\text{1}$	Metal

(b)

Interpretation Introduction

Interpretation:

The chemical symbol, group number, atomic number, and nature of germanium needs to be explained.

Concept Introduction :

The periodic table is a proper arrangement of the elements according to their increasing atomic number. The elements of same group have similar properties. The periodic table is divided into two sections, one is a vertical column and the other one is horizontal row.

Answer to Problem 40A

Chemical symbol= $\text{Ge}$ , Atomic number= $\text{32}$ , Group number= $\text{6}$ , Nature = Metalloid.

Explanation of Solution

According to the nature of elements, different groups are categorized as alkali metals, alkaline earth metals, halogen, inert gases, etc. Elements are arranged in a vertical column known as group. Also, elements are arranged in a horizontal row known as a period.

The chemical symbol, group number, atomic number, and nature of germanium:

Element	Chemical symbol	Atomic number	Group number	Metal / non-metal/ metalloid
Germanium	$\text{Ge}$	$\text{32}$	$\text{6}$	Metalloid

(c)

Interpretation Introduction

Interpretation:

The chemical symbol, group number, atomic number, and nature of Magnesium needs to be explained.

Concept Introduction :

The periodic table is a proper arrangement of the elements according to their increasing atomic number. The elements of same group have similar properties. The periodic table is divided into two sections, one is a vertical column and the other one is horizontal row.

Answer to Problem 40A

Chemical symbol= $\text{Mg}$ , Atomic number= $\text{12}$ , Group number= $2$ , Nature = Metal.

Explanation of Solution

According to the nature of elements, different groups are categorized as alkali metals, alkaline earth metals, halogen, inert gases, etc. Elements are arranged in a vertical column known as group. Also, elements are arranged in a horizontal row known as a period.

The chemical symbol, group number, atomic number, and nature of Magnesium:

Element	Chemical symbol	Atomic number	Group number	Metal / non-metal/ metalloid
Magnesium	$\text{Mg}$	$\text{12}$	$2$	Metal

(d)

Interpretation Introduction

Interpretation:

The chemical symbol, group number, atomic number, and nature of Titanium needs to be explained.

Concept Introduction :

The periodic table is a proper arrangement of the elements according to their increasing atomic number. The elements of same group have similar properties. The periodic table is divided into two sections, one is a vertical column and the other one is horizontal row.

Answer to Problem 40A

Chemical symbol= $\text{Ti}$ , Atomic number= $\text{22}$ , Group number= $\text{4}$ , Nature = Metal.

Explanation of Solution

According to the nature of elements, different groups are categorized as alkali metals, alkaline earth metals, halogen, inert gases, etc. Elements are arranged in a vertical column known as group. Also, elements are arranged in a horizontal row known as a period.

The chemical symbol, group number, atomic number, and nature of Titanium:

Element	Chemical symbol	Atomic number	Group number	Metal / non-metal/ metalloid
Titanium	$\text{Ti}$	$\text{22}$	$\text{4}$	Metal

(e)

Interpretation Introduction

Interpretation:

The chemical symbol, group number, atomic number, and nature of iodineneeds to be explained.

Concept Introduction :

The periodic table is a proper arrangement of the elements according to their increasing atomic number. The elements of same group have similar properties. The periodic table is divided into two sections, one is a vertical column and the other one is horizontal row.

Answer to Problem 40A

Chemical symbol= $\text{I}$ , Atomic number= $\text{53}$ , Group number= $\text{17}$ , Nature = Non-metal.

Explanation of Solution

According to the nature of elements, different groups are categorized as alkali metals, alkaline earth metals, halogen, inert gases, etc. Elements are arranged in a vertical column known as group. Also, elements are arranged in a horizontal row known as a period.

The chemical symbol, group number, atomic number, and nature of iodine:

Element	Chemical symbol	Atomic number	Group number	Metal / non-metal/ metalloid
Iodine	$\text{I}$	$\text{53}$	$\text{17}$	Non-metal