The atoms of different isotopes of same element differ from each other in the number of

Electrons in outer most shell only

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Protons

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Electrons in the inner shell only

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Neutrons

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Solution

The correct option is D
Neutrons

Isotopes have same atomic number but different mass number.

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Similar questions

(a) same number of neutrons but different number of protons

(b) same number of neutrons but different number of electrons

(d) different number of neutrons but same number of protons

Name the following :

(a) The element which does not contain any neutron m its nucleus.

(b) An element having valency 'zero'.

(d) Two atoms having the same number of protons and electrons but different number of neutrons.

(e) The shell closest to the nucleus of an atom.

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