Multiple choice The half-life of a radioactive disintegration having rate constant 330 sec-1 is: 2.0 x 10-3 sec 2.1 x 10-3 sec 2.1 x 10-2 sec 2.0 x 10-2 sec 2.1 x 10-4 sec Reveal answer Fill a bubble to check yourself B Correct answer Explanation Half life period, t1/2 = 0.693/k= 0.693/330 sec-1 = 2.1 x 10-3 sec