Ferric oxide crystalises as hexagonal close packing array of oxide ion two out of every three one octaheddral holes is occupied by ferric ions.derive the formula of ferric oxide .

Asked by Topperlearning User | 17th Jun, 2016, 10:00: AM

Expert Answer:

n oxide ions form close packing, n octahedral void are formed & 2/3 n octahedral voids are occupied so the ratio is 2/3n Fe : n O. So the formula is Fe2O3(multiply by 3 to get whole number formula).

Answered by  | 17th Jun, 2016, 12:00: PM