Home » Ask & Discuss » Chemistry. » Physical Chemistry « Back to Discussion

Physical Chemistry

Blazing goIITian

Joined:	15 Jul 2008
Post:	315

18 Jun 2009 23:27:51 IST

0 People liked this

239

Ferric oxide crystallises in a hexagonal close-packed array of oxide ions with two out of every thre

None

Ferric oxide crystallises in a hexagonal close-packed array of oxide ions with two out of every three octahedral holes occupied by ferric ions. Derive the formula of the ferric oxide.

Share this article on:

Comments (1)

AViK

Blazing goIITian

Joined: 5 Sep 2008

Posts: 953

19 Jun 2009 21:13:13 IST

Like 0 people liked this

Total atoms in HCP = 6

Lattice made by => Oxide ions...

Consider a single unit cell.... oct. voids =6

Formula....... Fe _2/3*6 O₆ ...simplifying..~~~~~Ans :: Fe₂O₃~~~~~

Quick Reply

Reply

	Some HTML allowed.
	Keep your comments above the belt or risk having them deleted.
	Signup for a avatar to have your pictures show up by your comment
	If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team