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Question

The half-life of carbon-14 (14C) is 5715 yr. What is its decay constant?

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Solution

Given,

Half-life of carbon-14 = 5715 years

We have to find the decay constant

We have the equation for half-life,

t12=0.693λ

Where,

t12 is the half-life and λ is the decay constant

So,

λ=0.6935715=0.0001212598

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