Chapter 6, Problem 50A

(a)

Interpretation Introduction

Interpretation: Nonmetal from group 4A is to be identified.

Concept introduction:

The periodic table is a columnar structure that organizes different elements into groups based on how they behave. The elements in the periodic table of today are ordered according to the periodic law. The elements are organized in the modern periodic table in increasing order of their atomic number.

Answer to Problem 50A

C

Explanation of Solution

Group 4A elements are carbon, silicon, germanium, tin, and lead. Among group 4A elements carbon is a nonmetal. The symbol of carbon is C.

Thus, the nonmetal of group 4A is C.

(b)

Interpretation Introduction

Interpretation: The inner transition metal with the lowest atomic number is to be identified.

Concept introduction:

The periodic table is a columnar structure that organizes different elements into groups based on how they behave. The elements in the periodic table of today are ordered according to the periodic law. The elements are organized in the modern periodic table in increasing order of their atomic number.

Answer to Problem 50A

Lanthanum (La)

Explanation of Solution

Lanthanides and Actinides placed in periods 6 and 7 respectively are called inner transition elements. The atomic number of inner transition elements. The inner transition metal with the lowest atomic number in the periodic table is lanthanum (La) having atomic number 57.

(c)

Interpretation Introduction

Interpretation: All the non-metals for which atomic number is a multiple of five are to be identified.

Concept introduction:

The periodic table is a columnar structure that organizes different elements into groups based on how they behave. The elements in the periodic table of today are ordered according to the periodic law. The elements are organized in the modern periodic table in increasing order of their atomic number.

Answer to Problem 50A

B, Ne, P, Br, and At

Explanation of Solution

Nonmetals having an atomic number multiple of five are:

Boron (B): atomic number 5

Neon (Ne): atomic number 10

Phosphorous (P): atomic number 15

Bromine (Br): atomic number 35

Astatine (At): atomic number 85

(d)

Interpretation Introduction

Interpretation: Metal from group 5A is to be identified.

Concept introduction:

The periodic table is a columnar structure that organizes different elements into groups based on how they behave. The elements in the periodic table of today are ordered according to the periodic law. The elements are organized in the modern periodic table in increasing order of their atomic number.

Answer to Problem 50A

Sn

Explanation of Solution

Group 5A elements are nitrogen (N), phosphorous (P), arsenic (As), antimony (Sb), and Tin (Sn). Among 5A elements, Sn is a metal