Question

How is the mole defined? What is the symbol for SI unit of mole? [2 marks]

Answer 1

Definition of mole:

Mole is defined as the amount (mass) of substance that contains as many particles as there are atoms in exactly 12 g of C-12 isotope (12 g of C-12 isotope contains Avogadro’s number of particles). [1 mark]

SI unit of mole:

SI unit of mole is mole represented by symbol mol. [1 mark]