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Explain giving a suitable reason for ...

Explain giving a suitable reason for each of the following :
(i) Transition metals and their compounds are generally found to be good catalysts.
(ii) Metal-metals bonding is more frequent for the 4d and the 5d series of transitions metals than that for the 3d series.

A

their unfilled d-orbitals

B

their ability of adopt variable oxidation states

C

their chemical reactivity

D

their magnetic behaviour

Text Solution

Verified by Experts

The correct Answer is:
B
Transition metals are show variable oxidation states
`2SO_(2)+O_(2) overset(V_(2)O_(5))rarr 2SO_(3)`
`SO_(2)+overset(+5)V_(2)O_(5)rarrSO_(3)+overset(+4)V_(2)O_(4)`
`overset(+4)V_(2)O_(4)+O_(2)rarr overset(+5)V_(2)O_(5)`
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