Question

what you means by the terms atomic number and mass number
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Answer 1

Answer:

atomic no. means the elements no.

Explanation:

mass no. means mass of the elements

Answer 2

Atomic number: I) The number of the protons present 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 23g/mol.

iii) Isotopes are elements with the same atomic number but different mass number

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