Question

Which of the following statement is incorrect ?
A. `Ti(NO_(3))_(4)` is a colourless compound.
B. `[Cu(NC CH_(3))_(4)]^(+)BF_(4)^(-)` is a colourless comopound.
C. `[Cr(NH_(3))_(6)]^(3+)3Cl^(-)`id a coloured compound.
D. `K_(3)[VH_(6)]` is a colourless compound.

Answer 1

(D)
(A) `"_(22)Ti^(4+) E.C = 3d^(@)4s^(@)`coolourless
(B) `"_(29)Cu^(3+) E.C = 3d^(@)4s^(@)` colourless
( C) `"_(24)Cr^(3+) E.C = 3d^(10)4s^(@)` colouref (most likely)
(D) `"_(23)V^(3+) E.C = 3d^(2)4s^(@)` coloured (most lilely)