A series of anions is shown below:

The anion on the far right is called “BARF” by chemists, as its common abbreviation sounds similar to this word.
(a) What is the central atom and the number of electro-pair domains around the central atom in each of these anions?
(b) What is the electron-domain geometry around the central B in BARF?
(c) Which, if any, of these anions has an expanded octet around its central atom?
(d) Tetrabutylammonium, (CH₃CH₂CH₂CH₂)₄N⁺ is a bulky cation. Which anion, when paired with the tetrabutylammonium cation, would lead to a salt that will be most soluble in nonpolar solvents?

Transcribed Image Text:

F3C CF3 F₂CVCF3 CF3 CF3 CF3 F3C (i) F3C F3C- (iv) -CF3 CF3 FI P F FF (iii) 1 CF3- F3C. Ell ill: F CF3 F3C B (ii) F CF3 CF3 (v) -CF3