Chapter 21, Problem 2SEPP

Interpretation Introduction

Interpretation:

The number of neutrons in radium-$226$ nucleus is to be determined.

Concept Introduction:

The number of neutrons in an atom is given as follows:

$\text{Number of nuetrons}=\text{Mass number}-\text{Atomic number}\text{.}$

In the notation of an atom, the number present as subscript represents the atomic number while the superscript represents the atomic mass.