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What happens to proton neutron ratio during alpha decay

What happens to proton neutron ratio during alpha decay

Grade:12

1 Answers

Arun
25757 Points
4 years ago
When uranium emits an alpha particle, it emits an equal number of protons and neutrons.  At this point it becomes a simple math problem.  If the original nucleus is 238U, then the nucleus has 92 protons and 146 neutrons, giving it an n/p ratio of 146/92 or 1.59.  After it emits an alpha particle, the new nucleus is 234Th which has 90 protons and 144 neutrons.  For this nucleus the n/p ratio is 144/90 or 1.6, a slight increase.

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