+1 vote
in Physics by kratos

A radioactive element whose mass number is 218 and atomic number is 84 emits β– particle. What would be the mass number and atomic number of element after decay?

1 Answer

+5 votes
by kratos
 
Best answer

85X218 → 85Y218 + -1β0 + (\overline v)
Atomic number of produced nucleus = 85
Mass number = 218

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