alleryWhich molecule features hydrogen bonding?
AH2O
BH2
CCH4
DO2
Answer & Solution
Correct answer: A. H2O
1. Hydrogen bonding occurs when H is bonded to F, O or N.
2. In water, H is bonded to highly electronegative O.
3. The partial positive H on one molecule attracts the lone pair on O of another.
4. So H2O molecules form hydrogen bonds among themselves.
5. CH4 has no electronegative donor; H2 and O2 have only one atom type.
_Source: Selina Concise Chemistry ICSE Class 10, Ch 2 'Chemical Bonding'_
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