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Q.

A nucleus of element X is represented as X 2656.Which is an isotope of element X?

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a

X 5626

b

X 2654

c

X 2456

d

X 2854

answer is B.

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Detailed Solution

Isotopes are variants of specific chemical elements that differ in the number of neutrons and, as a result, the number of nucleons. All isotopes of a particular element have the same number of protons, but different numbers of neutrons in each atom. The isotope has the same number of protons, that is, number of protons, that is, 26. Therefore, option B is correct.

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