JEE Main Chemistry question

Which one of the following statement is not true with regard to transition elements?

(A)They readily form complex compounds.
(B)They show variable oxidation states.
(C)All their ions are colourless.Correct
(D)Their ions contain partially filled -electrons.

Answer: (C)

Solution

Transition metal ions are mostly coloured due to partially-filled -orbitals undergoing - transitions; a few exceptions (like , ) are colourless, but the blanket statement that

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Question ID VK-147262