Question

what do the following symbols stand for?
a) o b)  2o c) o2 d) 3o2

Answer 1

O means a single atom of oxygen.
2 O means 2 atoms of oxygen.
O₂ means a single molecule of oxygen.
3O₂ means 3 molecules of oxygen.

Answer 2

Meanings of the symbol:

(a) O - O stands for a single oxygen atom. [O] Is known as nascent Oxygen.

(b) 2O - 2O stands for two atoms of oxygen.

(c) $O_2$ - $O_2$ stands for molecular oxygen. In nature, oxygen is found in the molecular state of $O_2$.

(d) $3O_2$ - Here,  $3O_2$ represents the 3 number of molecules taking part in a particular reaction. The coefficient 3 of O2 is also called as stoichiometric coefficient.

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