Question

what do you mean by mass no. of an atom
plz plz plz plz frnds help me ​

Answer 1

Answer:

mass number is the number of electrons and protons of any elements.

atomic number is the number position of an element.

Answer 2

Answer:

Atomic mass is constituted by nucleons, which is the sum of the neutrons and protons. Electrons are not considered in the mass number of an atom as they have negligible mass. Mass number is denoted by the unit 'u' (Dalton).

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