If a nucleus decays by successive alpha, beta and beta particle emissions, its atomic number will

Question

If a nucleus decays by successive alpha, beta and beta particle emissions, its atomic number will....

The correct answer is "unchanged" can you explain why

Answer 1

Alpha decay releases a He nucleus and in Beta decay releases an electron by a change of a neutron into a proton that remains in the nucleus and an emitted electron.

Therefore alpha decay emits 2 protons and 2 beta decays increases the atomic number by 2 , therefore the atomic number does not change.

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Dale Swanson