Question

write any two significance of symbol?give one example also.

Answer 1

The symbol of an element is used to represent it in a chemical reaction. 

For example, we can write the reaction of Hydrogen (H) with Oxygen gas (O) using the appropriate symbols => 

H2 + O2 => H2O

Answer 2

Hi,

1.Symbol represents name of the element. 
2. Symbol represents one atom of the element. 
3. Symbol also represents one mole of atoms of the element. That is, symbol also represents 6.022 x 1023 atoms of the element.