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A neutron causes   83211Bi to change according to the following reaction:   01n +   83211Bi →   ZAX...

A neutron causes   83211Bi to change according to the following reaction:   01n +   83211Bi →   ZAX + γ
The   ZAX nucleus subsequently undergoes β- decay, and its daughter does too. What is the atomic number of the final nucleus?

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