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Questions  

Which of the following does not contain coordinate covalent bond ?

a
NH4+
b
H30+
c
CH3-
d
AgCN2+

detailed solution

Correct option is C

In CH3-ion, carbon atom does not have lone pair of electrons. Carbon, C atom has octet number of electrons of its valency shell. Hence, there is no coordination covalent bond present in  CH3- ion.

But in the remaining three cases, at least one lone pair of electrons to be present at the central atom or ligand CN-

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