Chapter 11.4, Problem 5QQ

Interpretation Introduction

Interpretation:

Half-life of a 1.0 gram sample has to be identified from the given options if the half-life of 2.0 gram sample is 14 hours.

Concept Introduction:

Radioactive nuclides undergo disintegration by emission of radiation.  All the radioactive nuclide do not undergo the decay at a same rate.  Some decay rapidly and others decay very slowly.  The nuclear stability can be quantitatively expressed by using the half-life.

The time required for half quantity of the radioactive substance to undergo decay is known as half-life.  It is represented as $t_{1/2}$.