Question

(d) Acid

7. Which one of the following is correctabout special properties of d-block elements?
(a) They have variable oxidation state
(b) They have capability of complex ion formation
(c) They have capability of colored compound formation
(d) They act as catalysts
(e) all

Answer 1

The special properties of d-block elements include variable oxidation states, complex ion formation, colored compound formation, and catalytic activity.

Step-by-step explanation:

The correct option that describes the special properties of d-block elements is (e) all. D-block elements possess all of the listed properties: variable oxidation states, capability of complex ion formation, ability to form colored compounds, and acting as catalysts.

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