Question

how is the atomic number and mass number related to the number of neutrons and protons inside an atom​

Answer 1

The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.

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Answer 2

Answer:

Atomic no. = no. of protons + electrons

mass no. = no. of protons +no. of neutrons (present only inside nucleus of atom)