Same chapter3 marksDifficulty: Medium
Why do transition metals and their compounds act as good catalysts?
d- and f-Block Elements
3 marksDifficulty: Medium
Why do transition elements show variable oxidation states?
Original Khojo Papers practice question — not from a past board paper.
Answer
In a transition element the energies of the (n − 1)d and ns orbitals are very close, so electrons from both can take part in bonding, and they can be removed one at a time. This gives a series of oxidation states differing by one, unlike the main-group elements where the states usually differ by two.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Manganese, for example, shows every state from +2 to +7.
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