avogadro no.??

Avogadro's Number:

 

Avogadro experimentally found that one mole of any substance always contained 6.022 × 10²³ particles.

This number is called the Avogadro’s number, denoted by N₀.

 

1 mole of a substance is equal to 6.022 × 10²³ particles i.e. atoms, molecules or ions of the substance.

 

For Example, How many molecules will be present in 2 grams of hydrogen gas (H₂)?

1 mole of hydrogen molecules = molecular mass of hydrogen = 2 grams

 

We know that 1 mole of hydrogen molecules contains 6.022 × 10²³ hydrogen molecules.

 

2 grams of hydrogen gas will also contain 6.022 × 10²³ hydrogen molecules.

 

1 mole (of anything) = 6.022 × 10²³ in number