Question

explain with example? (1) Automic number (2) mass number ​

Answer 1

Explanation:

) Atomic number is the total number of protons present in the nucleus of an atom. It is also equal to the number of electrons for a neutral atom. Example, atomic number of sodium is 11. ii) Mass number is the number of protons and neutrons in the nucleus taken together.✌️

Answer 2

Answer:

ATOMIC NUMBER -

The definition of an atomic number is the number of protons in the nucleus of an atom of an element . Three for lithium and 20 for calcium are each an example of an atomic number

MASS NUMBER -

The total number of protons and neutrons in the nucleus of an atom . for example, nitrogen has 7 protons and 7 neutrons in its nucleus , giving it a mass number , for example, carbon - 12 and carbon - 14 have mass numbers of 12 and 24 respectively

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