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Question

Which amongst the following contains a covalent bond?

A
MgCl2
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B
CaF2
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C
Al2O3
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D
HCl
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Solution

The correct option is B HCl

Hydrogen chloride is a diatomic molecule, consisting of a hydrogen atom H and a chlorine atom Cl connected by a covalent single bond. Since the chlorine atom is much more electronegative than the hydrogen atom, the covalent bond between the two atoms is quite polar.


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