Is the following nuclear equation balanced? 218/85 At---> 218/84 Po + 0/-1 B?

a) yes

b) no

No

Reason:

During a beta decay, one neutron convert into one proton and one electron. The proton remained in nucleus while electron move away known as beta radiation. So atomic mass will be remained same but atomic no will increase by one. So correct ans will be with 218, 86 Po and beta radiation.