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Topic: Need help on Hydrogen bonding question  (Read 5383 times)

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Offline xangelofxdeathx

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Need help on Hydrogen bonding question
« on: March 31, 2007, 12:59:04 AM »
Which species can form intermolecular hydrogen bonds with other molecules or ions of the same type?

1. HF
2. CH3F
3. NH4+

A) 1 only
B) 3 only
C) 1 and 3 only
D) 1,2 and 3

The answer is A, but more importantly can someone explain to me why CH3F can't make a hydrogen bond?

I figured that since the structure has a C in the middle with 3 H and F on the outside, doesn't the F make a hydrogen bond with a H when CH3F bonds with another CH3F?

Offline Ahmed Abdullah

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Re: Need help on Hydrogen bonding question
« Reply #1 on: March 31, 2007, 07:25:21 AM »
H bonded with F,O and N is able to make hydrogen bond with F,O or N where latter each has at least one lone pair electron. That's why hydrogen bond exist between HF molecules but there is no hydrogen bond between HCl, HBr, HI.

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