Mass number of the atom of an element = Atomic number of the element + Number of neutrons in its nucleus.

True

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False

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Solution

The correct option is A True
The mass number of the atom of an element is equal to the sum of the number of protons and the number of neutrons present in its nucleus.
The mass number of an element = Number of protons + Number of neutrons
The number of protons inside the nucleus of an atom is equal to the atomic number of that element.
So, Mass number of the atom of an element = Atomic number of the element + Number of neutrons inside the nucleus of the atom
Therefore, the given statement is true.

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