All the naturally occurring isotopes of which of the following elements are unstable in nature?

Tin

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Uranium

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Carbon

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Chlorine

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Solution

The correct option is B Uranium
Uranium (Z = 92) is a highly unstable element with two naturally occurring isotopes, $23592 U$ and $23892 U$ . Both the isotopes are available in traces in nature, with the most abundant isotope being $23592 U$ . Both the isotopes of uranium are very unstable due to the fact that they have large number of neutrons compared to the number of protons.

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