Question

13) Hydrogen has three isotopes (A), (B) and (C). If the number of
neutron(s) in (A), (B) and (C) respectively, are (x), (y) and (3),
the sum of (x), (y) an (z) is :
(1) 4
(2) 3
(3) 2
(4) 1​

Answer 1

Answer:

hydrogen has 3 isotopes namely dueterium, tritium n protium therefore deuterium has 1 neutron n tritium has 2 so the sum would be 3 hence option (c) is correct