Physics, asked by Charisma7301, 1 year ago

the half life of radium is 1622years .how long will it take for 7th/8 of a given amount of decay?

Answers

Answered by Rohitgahlawat
1


mole of Pb=1210no of nuclei  N=6.023*1023210 A=λN77.4*3.7*1010=λ×6.023*1023210 9985.024*10−13=λ  decay constant .half life =0.693λ=0.6939985.024*10−13 secin years=0.6939985.024*10−13*365*24*60*60≈22 yearsregards
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