Q.

Which of the following contain covalent bond?

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a

HCl

b

MgCl2

c

CaF2

d

Al2O3

answer is B.

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Detailed Solution

Al2O3, CaF2 and MgCl2 all contain the metal hence they form the ionic bond. However, HCl does not contain metal and forms covalent bonds.

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