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Explain giving reason: (i) Treansitio...

Explain giving reason:
(i) Treansition metals and their compounds generally exhibit a paramagnetic behave .
(ii) The chemistry of actinoids is not so smooth as that of lanthanoids.

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(i) Transition elements have relatively low ionization energies and have one or two electrons in their outermost energy level `(ns^(1) or ns^(2))`. As a result, metallic bonds are formed . Hence, they behave as metals.
(ii) There is a gerater range of oxidation states, which is in part attributed to the fact that the 5f,6d and 7s levels are of comparable energies.
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