Q.

Number of neutrons in an atom of hydrogen is -

A. One
B. Zero
C. Two
D. Three
Answer» B. Zero
Explanation: Neutrons are the particles in an atom that have a neutral charge. So, if an atom has equal numbers of electrons and protons, the charges cancel each other out and the atom has a neutral charge. Hydrogen (H) has 1 proton and 1 electron; it does not have any neutron in its nucleus.
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