Question

If the mass number of an element is W and its atomic number is N, then
(a) Number of e⁻¹ = W – N
(b) Number of $_1H^1$ = W – N
(c) Number of $_0n^1$ = W – N
(d) Number of $_0n^1$ = N

Answer 1

c)no of neutrons=W-N ie

mass no-atomic no