Question

What is the difference between Atomicity and Valency? Give examples of this two?

Answer 1

Hey dear friend

Atomicity refers to Total number of atom present in a one molecule of an element.

Eg. O2= 2 atoms in an one molecule of
an oxygen
Cl2= 2 atoms is an one molecule of
chlorine

Valency refers to the no. of electrons present in an outermost shell of an element.

Eg.= According to electronic configuration of Na(sodium), the valency is 1 because it have 1 electron in an outermost shell.

2nd Eg.= According to electronic configuration of Mg(Magnesium), the valency is 2 because it have 2 in a outermost shell.

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Answer 2

Valency is the combining capacity of an element which depends on the electrons present in the outermost shell but Atomicity is the total number of atoms present in one molecule of an element or a substance.For example, in O2, there are 2 atoms of oxygen .For example, oxygen has six valence electrons, but its valency is 2. Some elements may have more than one combining power (or valency), while others have just one