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Bent molecular geometry

Posted: Fri Dec 07, 2018 3:23 pm
by Kirsty Star 2H
Are both AX2E and AX2E2 bent shaped? Is there a difference?

Re: Bent molecular geometry

Posted: Fri Dec 07, 2018 3:27 pm
by Carine Tamamian 2B
Yes, they both are bent, it's just that AX2E has an angle <120, and AX2E2 is <109, so the 2 lone pairs are just providing more repulsion than the one lone pair.

Re: Bent molecular geometry

Posted: Fri Dec 07, 2018 5:49 pm
by Rosha Mamita 2H
AX2E2 takes bond angles similar to those of tetrahedral, except the great repulsion of both lone pairs makes the bond angle less than 109.5. AX2E Two lone pairs creates more repulsion than one lone pair

Re: Bent molecular geometry

Posted: Fri Dec 07, 2018 5:56 pm
by Daniel Bowen 3I
For AX2E2 there are 4 regions of electron density therefore the angle measures are treated as those of a tetrahedral while AX2E has three regions of electron density and the angle measures should be treated as such.