Question

How many electrons, protons and neutrons are there in 12 g of ₆C¹² and in 14 g of ₆C¹⁴?

Answer 1

12 g of ₆C¹² has number of atoms = 6 x 10²³

∴ the number of electrons in 12 g of ₆C¹²

= 6 x 6 x 10²³ = 36 x 10²³

The number of protons in 12 g of ₆C¹² = 36 x 10²³

The number of neutrons in 12 g of ₆C¹² = (A - Z) x 6 x 10²³ = 6 x 6 x 10²³ = 36 x 10²³

Similarly

No. of electrons in 14 g of ₆C¹⁴ = 36 x 10²³

No. of protons in 14 g of ₆C¹⁴ = 36 x 10²³

No. of neutrons in 14 g of ₆C¹⁴ = (A - Z) x 6 x 10²³

= (14 - 6) x 6 x 10²³

= 48 x 10²³.