Chapter 2, Problem 2.135P

(a)

Interpretation Introduction

Interpretation:

The ${}_Z^A\text{X}$ notations for the isotopes of antimony are to be determined.

Concept introduction:

In the periodic table, the elements are represented using alphabetic symbols. Each element has a unique symbol which distinguishes it from other elements. The atomic symbols of the elements are derived from their English, Latin or Greek names. The subscript $Z$ in the ${}_Z^A\text{X}$ notation represents the atomic number or the number of protons in the element. The superscript $A$ denotes the mass number of the element. The mass number is the sum of the number of protons and neutrons in the element.

(b)

Interpretation Introduction

Interpretation:

The natural abundances of the isotopes of antimony are to be determined.

Concept introduction:

Isotopes are atoms with the same atomic number but a different mass number. The difference in the mass numbers of isotopes arises due to the difference in the number of neutrons in them. The mass number of an atom is the sum of the protons and neutrons in them. The number of protons of isotopes is the same but the neutron number varies. Due to the same number of protons in the isotopes, they occupy the same position in the periodic table.