A radon 220Rn86 nucleus emits an alpha particle becomes a
A) 216Po84
B) 220At85
C) 220Rn86
D) 220Fr87
E) 224Ra88
The correct option is: (A) 216Po84
Explanation:
An alpha particle is 4He2 so reduce the atomic mass by 4 and the atomic number by 2.
