Question

define the terms atomic number and mass number​

Answer 1

Answer:

Atomic Number: The number of the protons present in the nucleus of an atom is called atomic number. ... ii) Mass number is the number of protons and neutrons in the nucleus taken together. For example, mass number of sodium is 23 g/mol. iii) Isotopes are elements with the same atomic number but different mass numbers.

Answer 2

The atomic number is the number of protons found in the nucleus of every atom of that element whereas the total number of protons and neutrons in a nucleus is the called mass number...

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