Chemistry
Among the following compounds, identify the compound that has all three bonds (ionic, covalent and coordinate bonds).
- Ammonia
- Ammonium chloride
- Sodium hydroxide
- Calcium chloride
Chemical Bonding
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Answer
Ammonium chloride
Reason —
- Covalent bonds: Within the NH4+ ion, the N–H bonds are covalent.
- Coordinate bond: The lone pair from nitrogen forms a coordinate (dative) bond with a proton (H+) to form the NH4+ ion.
- Ionic bond: The electrostatic attraction between the NH4+ cation and the Cl- anion constitutes the ionic bond in the crystal.
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