Chapter 20, Problem 3E

(a)

Interpretation Introduction

Interpretation:

The missing element needs to be determined. The type of decay needs to be identified.

  

Concept Introduction:

Any unstable atomic nucleus would always convert to smaller stable fragments and this is termed as radioactive decay. When there is unbalance of protons and neutrons in the nucleus, then decay happens releasing energy in the form of radiations. These radiations are alpha, beta and gamma.

(b)

Interpretation Introduction

Interpretation:

The missing element needs to be determined. The type of decay needs to be identified.

  

Concept Introduction:

Radioactive decays involve the conversion of unstable atomic nucleus to smaller stable fragments. Here it is an unbalance of protons and neutrons in the nucleus, which releases energy in the form of radiations. These radiations are alpha, beta and gamma.