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Nucleus of Hydrogen atom consists of

  • A.2 protons only
  • B.2 neutrons only
  • C.1 proton only
  • D.1 electron only

Answer: C

The nucleus of an ordinary hydrogen atom is a single proton.

Protium is the only nuclide with no neutron at all. This is why the hydrogen ion \(\mathrm{H^+}\) is simply a bare proton, and why it cannot exist free in water.

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