The half-life of1 is 8.04 days. (a) calculate the decay constant for this isotope. (b) find the number of 1311 nuclei necessary to of 0.5 uci produce a sample with an activity

Explanation:

Given that,

We need to calculate the decay constant

Using formula of decay constant

We need to calculate the number of nuclei

Where,

A= activity

ci = disintegration

Hence, This is the required solution.

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when it gains or loses electrons