What is the main product when 231/91 Pa undergoes alpha decay? 231/89 Ac 227/89 Ac 227/92 Ac 239/93 Pu none of the above
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The atomic number decreases by 2 and the mass number decreases by 4. So, if 91 Pa (Protactinium) undergoes alpha decay, it will lose 2 protons and 2 neutrons. This means the atomic number will decrease by 2 (from 91 to 89) and the mass number will decrease by 4 Show more…
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