Read the given data below and identify the correct option regarding X and Y.

Atomic species Number of electrons Number of protons Number of neutrons

X 8 8 8

Y 8 8 10

X and Y are neither isotopes nor isobars.

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X and Y are isobars.

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X and Y are isotopes.

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Solution

The correct option is C X and Y are isotopes.
<Atomic species X>

Number of protons represents the atomic number. So, the atomic number of X is 8.

Mass number is the sum of neutrons and protons. So, 8+8 = 16. So, the mass number of X is 16.

<Atomic species Y>

Number of protons represents the atomic number. So, the atomic number of Y is 8.

Mass number is the sum of neutrons and protons. So, 8+10 = 18. So, the mass number of Y is 18.

X and Y are having same atomic number and different mass numbers.

Therefore, the correct option b.

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Read the given data below and identify the correct option regarding X and Y.​ Atomic species Number of electrons Number of protons​ Number of neutrons ​ X 8 8 8 Y 8 8 10

Read the given data below and identify the correct option regarding X and Y.

Atomic species Number of electrons Number of protons Number of neutrons

X 8 8 8

Y 8 8 10