Problem: The anion (v) is called "BARF" by chemists, as its common abbreviation sounds similar to this word.What is the central atom and the number of electron-pair domains around the central atom in each of these anions?

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We are asked to determine the central atom and the number of electron-pair domains around the central atom in the given anion:


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The anion (v) is called "BARF" by chemists, as its common abbreviation sounds similar to this word.

(i) A central Cl is double bonded on four sides to O. (ii) A central B is single bonded on four sides to F. (iii) A central P is single bonded on six sides to F.(iv) A central Al is bonded to O on four sides. Each O is single bonded to a C that is single bonded to three CF3s. (v) A central B is single bonded on four sides to benzene rings. Each benzene ring is attached to two CF3s.

What is the central atom and the number of electron-pair domains around the central atom in each of these anions?