B-2 explain me for each option

B-2. Which of the following names is impossible ?

(A) Potassium tetrafluoridooxidochromate (Vl)               (B) Barium tetrafluoridobromate (lll)
(C) Dichlorobis (urea) copper (ll)                                     (D) All are impossible

Dear Student,

[CrF4O]:Charge on the coordination sphere is 0. 6-4-2=0Therefore, Potassium must not be present here. [BrF4]:Charge on the coordination sphere is -1. 3-4=-1If Barium is present, then charge should be -2. Hence, correct answer is (D)

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