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Select the correct statement(s):
(a) The larger anions with more negative charges are more polarizable
(b) The polarizability sequence is \( \mathrm{I}^{-}\mathrm{Br}^{-}\mathrm{Cl}^{-}\mathrm{F}^{-} \)
(c) The covalency runs in the order \( \mathrm{ZnCl}_{2}\mathrm{CdCl}_{2} \) \( \mathrm{HgCl}_{2} \)
(d) The polarizing power among the transition series varies as follows: \( 3 d \)-series \( 4 d \)-series \( 5 d \)-series
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