Nuclear fission and fusion ? alpha and beta decay?

Question

Answer

Nuclear fission is when bigger nucleus splits into smaller nuclei .

Nuclear fusion is when smaller nucleis combine or fuse to form a bigger nucleus .

In both there is gain in binding energy.

alpha decay __ 2He4 i.e atomic no is reduced by 2 and mass no. is reduced by 4

beta decay__ -1e i.e atomic no is increased by 1 and no change in mass no.

gamma decay__ no change in atomic and mass no.