Question

it is possible for a hydrogen (¹H1) nucleus to emit an Alpha particle give a reason for your answer.

Answer 1

no it is not possible because if a nucleus emits alpha there is a loss of 4 in mass number and 2 in atomic number.but in the case of hydrogen nucleus it not possible,as hydrogen nucleus has only one mass number and one atomic number

Answer 2

No because for the emissions of alpha particle the parent nucleus must have number of proton and neutron greater than helium