______ is defined as the number of protons & neutrons present in the nucleus of an atom.

Atomic number

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Mass number

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Atomic mass number

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None of these

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Solution

The correct option is C Mass number
Mass number is defined as the number of protons and neutrons present in the nucleus of an atom and it is denoted by "A".

Hence the correct option is B.

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Similar questions

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?

Select the sub-atomic particles that are present in the nucleus of an atom.

A. Electrons

B. Protons

C. Neutrons

What is mass number of an element? How is the mass number related to the protons and neutrons present in the nucleus of an atom?

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