Physics, asked by mani4658, 11 months ago

The nucleus of francium -221 decays into a nucleus bismuth-209 in several steps. Which particle could be emitted

Answers

Answered by vibhashdwivedi

Answer:

3 alpha particles will be emitted.

Explanation:

when an alpha particle is emitted, the mass number i.e., the mass of nucleus decreases by four. Since here mass number has decreased by 12 therefore 3 alpha particles have been emitted.

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