Question

How are the atomic number and mass number related to the number of protons and neutrons? ​

Answer 1

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

Answer 2

Answer:

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

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