Chapter 18, Problem 53E

Interpretation Introduction

Interpretation:

The approximate age of Crater Lake is to be calculated.

Concept introduction:

The elements whose nucleus decays spontaneously are known as radioactive elements. The decay is accompanied by the emission of alpha particles, beta particles, and gamma rays. All the elements which have an atomic number greater than $83$ are radioactive. The

half-life of a radioactive substance is defined as the time taken by half of its atoms to decay.