alleryWhich compound contains BOTH ionic and covalent bonds?
ANaCl
BH2O
CCH4
DNH4Cl
Answer & Solution
Correct answer: D. NH4Cl
1. NH4Cl has the ammonium cation NH4+ and the chloride anion Cl-.
2. The N-H bonds inside NH4+ are covalent (including one coordinate).
3. The NH4+ and Cl- ions are held together by ionic attraction.
4. So NH4Cl has both covalent and ionic bonds.
5. NaCl is purely ionic; H2O and CH4 are purely covalent.
_Source: Selina Concise Chemistry ICSE Class 10, Ch 2 'Chemical Bonding'_
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