A) KCl
B) KCN
C) \[C{{H}_{4}}\]
D) \[{{H}_{2}}\]
Correct Answer: B
Solution :
\[KCl\] has ionic bond between \[{{K}^{+}}\] and \[C{{l}^{-}}\]. \[C{{H}_{4}}\]and \[{{H}_{2}}\] have covalent bonds only. In KCN there is ionic bond between \[{{K}^{+}}\] and \[C{{N}^{-}}\]and C and N are held together by covalent bonds.
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