Explain with examples 1)atomic number 2)mass …
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Gaurav Seth 7 years, 1 month ago
(i) Atomic Number : The number of protons present in the nucleus of an atom is called atomic number. It is denoted by Z. e.g:
i.e., atomic number = 20
(ii) Mass Number: The sum of the number of protons and neutrons present in the nucleus of an atom is called mass number. It is denoted by A. e.g.
i.e., mass number = 40
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