Question

define atomic mass and atomic number​

Answer 1

Answer:

Atomic Number and Mass Number. The sum of the mass number and the atomic number for an atom (A-Z) corresponds to the total number of subatomic particles present in the atom. The mass number reports the mass of the atom's nucleus in atomic mass units

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Answer 2

Answer:

atomic mass is the no of protons plus

number of electron.

atomic no is the no of electrons in an atom