Question

Half life of radium is 1600 years. Its average life is

Answer 1

3200 years

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Answer 2

Answer:

$2.279*10^{3}$  YEARS

Explanation:

AVERAGE LIFE ( τ )

        τ = 1 / λ            ----- {1}

        τ = {T1/2} /ln2

        τ = {T1/2} /0.693 = $T\frac{1}{2} / 0.693$

        τ = 1580 /0.693

        τ = 2.279*10^{3} = $2.279*10^{3}$