Question

The isotope atoms differ in a. Atomic number b. Number of protons c. Number of electrons d. Atomic weight

Answer 1

The correct answer is d) Atomic weight

Reason: In different isotopes of an atom, the no. of neutrons in the nucleus of the atom are different. Hence, their weight is different (as the mass of an atom is the sum of the no. of protons and neutrons)

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