All the atoms of the world comprise of electrons, proton & neutron except that of ______________ atom in which neutron is absent ?
Correct answer: A. Hydrogen
- A. Hydrogen
- B. Deuterium
- C. Neon
- D. Helium
Explanation
Ordinary hydrogen-1, called protium, has one proton and no neutron; deuterium has one neutron and helium and neon contain neutrons in their common nuclei. Thus hydrogen is the intended option.
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