H20

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Daniel Hernandez 1G
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Joined: Wed Sep 30, 2020 9:45 pm

H20

Postby Daniel Hernandez 1G » Fri Dec 11, 2020 10:42 pm

Why is H2O considered monodentate if there are two lone pairs around the oxygen atom?

Lakshmi Davuluri 1E
Posts: 100
Joined: Wed Sep 30, 2020 9:50 pm

Re: H20

Postby Lakshmi Davuluri 1E » Fri Dec 11, 2020 10:50 pm

H20 is considered monodentate because only one lone pair bonds a central atom, while the other lone pair points away from the central atom. Hope this helps!

Olivia Monroy 1A
Posts: 107
Joined: Wed Sep 30, 2020 10:00 pm

Re: H20

Postby Olivia Monroy 1A » Fri Dec 11, 2020 10:52 pm

H2O is monodentate because in a molecule one atom can only bond to the TM once, so only one lone pair on the O atom can bond to a central atom. If you have two separate O atoms spaced out in the same molecule both can bond to an atom, which again is only one lone pair per atom.

Edward Tang 1k
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Joined: Wed Sep 30, 2020 10:00 pm
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Re: H20

Postby Edward Tang 1k » Fri Dec 11, 2020 11:17 pm

The two lone pairs are too close for both to bond and be stable. Usually bidentate ligands have electron lone pairs that are far away and point to the same direction.

Hailey Kang 2K
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Re: H20

Postby Hailey Kang 2K » Sat Dec 12, 2020 12:02 am

Hi! Only one of the lone pairs can bond to a central atom.

allyssa bradley 1H
Posts: 95
Joined: Wed Sep 30, 2020 9:47 pm

Re: H20

Postby allyssa bradley 1H » Thu Dec 17, 2020 9:33 am

Why are the lone pairs so close then, instead of being on opposite sides?

Nicole Bruno Dis 1B
Posts: 51
Joined: Wed Sep 30, 2020 9:36 pm

Re: H20

Postby Nicole Bruno Dis 1B » Thu Dec 17, 2020 9:55 am

H20 contains both lone pairs on the oxygen but only one binding site between H2O and the central metal, therefore it is monodentate.


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