Question

Which of the following statement is correct?

• A. $Al{F}_3$ is predominantely covalent in nature
• B. $NO{F}_3$ does not exist
• C. $(SCN{)}_2$ is pseudohalogen
• D. $B{F}_4^{-}$ has back bonding

Answer 1

The correct option is C $(SCN{)}_2$ is pseudohalogen

An axion which is not a halogen but has similar property like halogen is called a pseudohalogen.

A pseudohalogen is composed of two electronegative chemicals linked to each other like AB - BA.

Hence is a pseudohalogen.