Chapter 7, Problem 9STP

Interpretation Introduction

Interpretation: To determine the ion formed by the bromine atom when it gains an electron.

Concept Introduction: A charged atom or molecule is an ion. Positively charged ions are called cations while negatively charged ions are referred to as anions.

Answer to Problem 9STP

option (D)

Explanation of Solution

The atomic number of Bromine is 35. So, the neutral bromine atom will have 35 protons as well as 35 electrons. It can gain one electron, when it will gain one electron, then it will have 36 electrons. Bromine anion contains 35 protons and 36 electrons with one negative charge.

(A)When bromine gains or loss its electrons, then it will attain a charge, it can be anion or cation.

(B)When a bromine atom gains one electron then it will carry one negative charge. It can be expressed as:

  ${\text{Br+e}}^{\text{-}}\to {\text{Br}}^{\text{-}}$

(C) Bromine atom take one electron then it will be carrying a negative charge hence, an anion will be formed.

(D) It can be understood that all the options will be true.