Hydrogen has three isotopes (A),(B) and (C).

Question:

Hydrogen has three isotopes $(A),(B)$ and $(C)$. If the number of neutron(s) in (A), (B) and (C) respectively, are $(x),(y)$ and $(z)$, the sum of $(x),(y)$ and $(z)$ is:

  1. 3

  2. 2

  3. 4

  4. 1


Correct Option:

Solution:

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