Problem: Which of the following molecules can form hydrogen bonds with other molecules of the same kind?a. CH3Fb. CH3NH2c. H2Od. HIe. CH3-O-CH3f. CHCl3g. HCOOH 

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We are being asked to determine which among the given molecules can form hydrogen bonds with other molecules of the same kind.

Hydrogen Bond is the force that exists when H is directly connected to F, O, or N.


Let’s draw the Lewis structure of each molecule and determine if there’s an H directly connected to F, O, or N in the molecule.


a. CH3F

# of valence e-:

            Group             Valence Electrons
C         4A                   1 x 4 e- = 4 e-
H         1A                   3 x 1 e- = 3 e-
F          7A                   1 x 7 e- = 7 e-
                        Total: 14 valence e-

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Problem Details

Which of the following molecules can form hydrogen bonds with other molecules of the same kind?

a. CH3F
b. CH3NH2
c. H2O
d. HI
e. CH3-O-CH3
f. CHCl3
g. HCOOH

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