Bond Angles

(Polar molecules, Non-polar molecules, etc.)

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Zaynab Hashm 2I
Posts: 69
Joined: Wed Sep 11, 2019 12:15 am

Bond Angles

Postby Zaynab Hashm 2I » Fri Nov 15, 2019 8:34 pm

can someone please explain why bond angles may differ slightly for molecules with the same formula and general shape?

thanks in advance!

MingdaH 3B
Posts: 59
Joined: Thu Jul 11, 2019 12:17 am

Re: Bond Angles

Postby MingdaH 3B » Fri Nov 15, 2019 8:54 pm

What do you mean molecules with the same formula and general shape? Molecules of the same formula are the same molecules, and therefore should have the same bond angles?

Rohan Kubba Dis 4B
Posts: 50
Joined: Sat Aug 17, 2019 12:18 am

Re: Bond Angles

Postby Rohan Kubba Dis 4B » Fri Nov 15, 2019 9:07 pm

If you are referring to substances with the same electronic configuration, this is because the lone pairs of a substance affect the molecular geometry of substance more than atoms. In other words, if you look at rule 4 in the book, it explains that lone pairs repel the other atoms more than atoms and therefore, the bond angle will be changed (as well as the shape).

cassidysong 1K
Posts: 59
Joined: Fri Aug 30, 2019 12:15 am

Re: Bond Angles

Postby cassidysong 1K » Sat Nov 16, 2019 12:18 pm

if the atom contains lone pairs it may affect the bond angles slightly because they have a stronger repelling force and push the other bonding electrons closer together, distorting the shape slightly.

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