Questions
The half life of radium 1640 years and its atomic weight is 227 kg per kilo mol. The number of atom’s that will decay from its 1 gm sample per minute will be
detailed solution
Correct option is B
Rate of Decay, dNdt=λN where λ=0.6931t1/2=0.69311640×365×24×60 and N=mM×NA=1227×6.023×1023 Hence, dNdt=0.6931×6.023×10231640×365×24×60×227=2.1334×1012 per minTalk to our academic expert!
Similar Questions
The disintegration rate of a certain radioactive sample at any instant is 4750 disintegrations per minute. 5 min later, the rate becomes 2700 min-1. Then, the half-life of the sample (in min) is……..
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