Chapter 2, Problem 44QP

Interpretation Introduction

Interpretation:

The average atomic mass of bromine is to be calculated when atomic masses are given.

Concept introduction:

The different masses of an atom of a given element is due to isotopes.

Atomic mass represents the average mass of the atom, which produces that element.

The average atomic mass is calculated as follows:

$\text{Average atomic mass}={\displaystyle \sum _{i=1}^n{\text{f}}_i{\text{M}}_i}$

Here, ${\text{f}}_i$ is the fraction representing the natural abundance of isotopes and ${\text{M}}_i$ is the mass of the isotopes.

$fraction,f=\frac{\%abundance}{100}$