Chemical Bonding and Molecular Structure - Result Question 25
####25. Which one shows maximum hydrogen bonding?
(a) $H_2 O$
(c) $H_2 S$
(b) $H_2 Se$
(d) $HF$.
[1990]
Topic 3: Dipole Moment and Bond Polarity
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Solution:
- (d) As $F$ is most electronegative thus $HF$ shows maximum strength of hydrogen bond.
With the increase of electronegativity and decrease in size of the atom to which hydrogen is covalently linked, the strength of hydrogen bond increases.
(c) $BF_3, BeF_2, CO_2$ and 1, 4-dichlorobenzene all are symmetrical molecules.
