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d-and f-Block Elements — Chemistry STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceChemistryd-and f-Block Elements1 Mark
Question
Explain giving reason:
(a) Transition metals and many of their compounds show paramagnetic behaviour.
(b) The enthalpies of atomisation of the transition metals are high.
(c) Transition metals in their many compounds act as good catalyst.
✓

Answer

(a) Due to the presence of unpaired electrons.
(b) Due to strong inter-atomic forces.
(c) Due to variable oxidation states.

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