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Establish the relationship between atomic number, mass number, isotopes, isobars and valency of an atom.

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Establish the relationship between atomic number, mass number, isotopes, isobars and valency of an atom.

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Atomic number - Gives the number of protons (Z)

Mass number - Gives the number of protons and neutrons (A)

Isotopes - When atoms of same element have same number of protons (Z) but different number of a neutrons (s) such atoms are called isotopes.

Isobars - When atom of different element have same mass number (A) but different atomic number (Z) such atoms are called isobars.

Valency - It is the combining capacity of an atom.

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