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Structure of Atom
Isotopes of an element have:
(a) the same physical properties
(b) different chemical properties
(c) different number of neutrons
(d) different atomic numbers
The isotopes are the variant of the particular chemical element which has the same atomic number but a different mass number. For example, hydrogen has three isotopes, protium deuterium and tritium . These isotopes have the same atomic number but different mass numbers. The number of protons is equal to the number of electrons present in the atom. So, the isotopes must contain an equal number of electrons. This means that all isotopes have similar chemical properties.
Hence, the correct answer is (a) the same physical properties.
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