The number of protons in an atom is known as its
A)atomic Mass.
B)atomic number.
C)mass number.
D)molecular mass.

Name: The number of protons in an atom is known as its A)atomic Mass. B)atomic number. C)mass number. D)molecular mass.
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The atomic number of an element is defined as the number of protons present in the nucleus of an atom. It is a unique number for each element and determines the chemical properties of that element. It is usually represented by the symbol "Z".

The Number of Protons in an Atom Is Known as Its