Question

Half-life of radium is 1580 years. Its average life will be

(a) 2.275 x 10³ years

(b) 2.5 x 10³ years

(c) 8.825 x 10² years

(d) 11.832 x 10³ years

Answer 1

Correct option (a) 2.275 x 10³ years

Explanation:

Comments

Plz .. Explain how (average life = half life × 1.44) ??

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The radioactive half-life is not the same as the average lifetime, the half-life being 0.693 times the average lifetime. The example that causes the most confusion is the decay of the free neutron with a half-life of 10.3 minutes and an average lifetime of 14.9 minutes. and that is why Average life =  half-life x 1.44