1.

Which of the following is an electrovalent linkage [CPMT 1974; DPMT 1984, 91; AFMC 1988]

A.                 \[C{{H}_{4}}\]   
B.                 \[NC{{l}_{5}}\]
C.                 \[SiC{{l}_{4}}\]  
D.                 \[B{{F}_{3}}\]
Answer» C.                 \[SiC{{l}_{4}}\]  


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