JEE MainChemistryStructure of AtomMCQ+4 / −1
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) an (z) is :
- A3
- B1
- C4
- D2
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