Question

define atomic mass number​

Answer 1

Answer:

Atomic mass, the quantity of matter contained in an atom of an element.

Explanation:

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Answer 2

Answer:

Atomic Number - The number of protons in the atom of an element is called the atomic number of the element. For example - The atomic number of

sodium 11(Na)   is 11 as it has 11 protons in the nucleus of its atom.

All atoms of a given element have the same number of protons.

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