Question

The half life of a radioactive substance is 30s calculate the decay constant

Answer 1

Decay constant= 0.693/half life

=0.0231.

Answer 2

Definition:

For a radioactive substance, half life is defined as the time needed for it to disintegrate to the half of the original amount of a radioactive substance.

Given details:

Half life of the given radioactive element (T$1/2$) = 30s

Formula:

Decay constant is given by λ= ㏑2 / (T$1/2$)

Solution:

λ = 0.693 / 30 = 0.0231 s$-1$

Decay constant = 0.0231 s$-1$

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