Atomicity (chemistry)

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Atomicity is the total number of atoms present in one molecule of an element or a substance. [by Sanyam ] Example: In O2 there are 2 atoms of oxygen

Example[edit]

Consider

[Hydrogen (H2) = atomicity is 2],

[Ozone (O3) . . . = atomicity is 3],

[Phosphorus (P4) = atomicity is 4]


As I told you before that the number of atoms present in one molecule of an element is called its atomicity.

By Sanyam

Monoatomic, diatomic ,triatomic and Polyatomic[edit]

These all means just how many atoms are present in one molecule. For example =

Helium(He)=it has atom present in its one molecule so it is called monoatomic.

Hydrogen (H2) = it has 2 atoms present in its one molecule so it is called diatomic.

Ozone (O3) = it has 3 atoms present in its one molecule so it is called triatomic.

Likewise the no. Of atoms present in one molecule have different atomicity.

For=

1= Monoatomic

2= diatomic

3= triatomic

4= tetra-atomic

more than 4=polyatomic

8= Octa-atomic

Noble gases[edit]

A molecule which contains only one atom is called monatomic (inert gases), A molecule which contains two atoms is called diatomic (oxygen, nitric oxide, hydrogen, etc.) and A molecule containing three atoms is called a triatomic moleculele (ozone, sulphur dioxide, carbon dioxide,etc.)and A molecule containing more than 3 atoms are known as a polyatomic ions (phosphate,sulphur,etc.)