Question

explain with examples :-
(i) Atomic number
(ii) Mass number
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Answer 1

Answer:

here is your answer

Explanation:

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

Answer:

Mass number is always an integer.

The atomic mass reported on a periodic table is the weighted average of all the naturally occuring isotopes.

Being an average it would be most unlikely to be a whole number.

The mass of an individual atom in atomic mass units is the mass relative to carbon-12.

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