1.

Isotopes are the atoms of the same element having _______. (A) different number of protons (B) different number of electrons (C) different number of neutrons (D) same number of neutrons

Answer»

Correct option: (C) different number of neutrons

Isotopes are the atoms of the same element having same atomic number (i.e., containing same number of protons and electrons) but different mass number (i.e., different number of neutrons).



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