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JEE Main · 2019 · 09 Jan 2019 · Shift 1 · Hydrogen

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The isotopes of hydrogen are
  1. (A)tritium and protium only
  2. (B)protium and deuterium only
  3. (C)protium, deuterium and tritium✓ Correct
  4. (D)deuterium and tritium only

Answer: (C)

Solution

Hydrogen has three isotopes, all with a single proton: protium () with no neutron, deuterium () with one neutron, and tritium () with two neutrons, the last being radioactive. The complete set is therefore protium, deuterium and tritium.

JEE Main · 2019 · 09 Jan 2019 · Shift 1 · Single correct option

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