The number of protons in the nucleus of an atom is the atom's ........... number.

atomic

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mass

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shell

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unique

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Solution

The correct option is A atomic
An atom as whole is electrically neutral. Therefore number of protons is equal to number of electrons i.e. to maintain electrical stability and to make atom stable. Hence number of protons is equal to number of protons which is equal to atomic number.

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Similar questions

The number of protons in the nucleus of an atom is called it’s....................

Consider the following statements:

1. The number of protons in the nucleus of an atom of a given element is called the atomic number of that element.

2. Mass number of an atom is defined as the sum of number of protons and neutrons present in the nucleus of an atom.

3. Atoms of an element that have the same atomic number (Z) but different mass number (A) are called isotopes.

Which of the above statements is incorrectly stated?

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