Chapter 16, Problem 110A

(a)

Interpretation Introduction

Interpretation: The name and the symbol of the element in Group 7B, period 4 is to be determined.

Concept Introduction:

Periodic table is an organized array of elements in order of increasing atomic number, i.e., the total number of protons in an atom. In arranging elements, there is a recurring pattern called the “periodic law” in their property.

Answer to Problem 110A

The name of the element in Group 7B, period 4 is Manganese and the symbol is $\text{Mn}$ .

Explanation of Solution

Group 7 are transition metals which include Manganese, Technetium, Rhenium, and Bohrium. According to the modern periodic table, the name of the element in Group 7B, period 4 is Manganese and the symbol is $\text{Mn}$ .

(b)

Interpretation Introduction

Interpretation: The name and the symbol of the element in Group 3A, period 5 is to be determined.

Concept Introduction:

Periodic table is an organized array of elements in order from increasing atomic number i.e., the total number of protons in an atom. In arranging elements, there is a recurring pattern called the “periodic law” in their property.

Answer to Problem 110A

The name of the element in group 3A period 5 is Indium $\text{In}$ .

Explanation of Solution

Group 3A is called the scandium family because it consists of the lightest members. According to the modern periodic table, the name of the element in Group 3A, period 5 is Indium and the symbol is $\text{In}$ .

(c)

Interpretation Introduction

Interpretation: The name and the symbol of the element in Group 1A, period 7 is to be determined.

Concept Introduction:

Periodic table is an organized array of elements in order from increasing atomic number i.e., the total number of protons in an atom. In arranging elements, there is a recurring pattern called the “periodic law” in their property.

Answer to Problem 110A

The name of the element in Group 1A, period 7 is Francium and the symbol is $\text{Fr}$ .

Explanation of Solution

The group I elements are called alkali metals; francium is a highly radioactive metal that decays into astatine, radium, and radon. According to the modern periodic table, the name of the element in Group 1A, period 7 is Francium and the symbol is $\text{Fr}$ .

(d)

Interpretation Introduction

Interpretation: The name and the symbol of the element in Group 6A, period 6 is to be determined.

Concept Introduction:

Periodic table is an organized array of elements in order from increasing atomic number i.e., the total number of protons in an atom. In arranging elements, there is a recurring pattern called the “periodic law” in their property.

Answer to Problem 110A

The name of the element in Group 6A, period 6 is Polonium and the symbol is $\text{Po}$ .

Explanation of Solution

Group 6A elements are called chalcogens also called the oxygen family. The element Polonium present in this group is a radioactive element. According to the modern periodic table, the name of the element in Group 6A, period 6 is Polonium and the symbol is $\text{Po}$ .