14N + 4He -> 17H + 0

The equation 14N + 4He -> 17H + 0 is unbalanced. Assuming the intended reaction is 14N + 4He -> 17O + 1H (a common nuclear reaction, the proton-neutron reaction), then: Atomic numbers: 7 + 2 = 9 (left); 8 + 1 = 9 (right). Mass numbers: 14 + 4 = 18 (left); 17 + 1 = 18 (right). The reaction is balanced.