Which of the following statements is/are true \( \mathrm{P} \) (1) In Ferrocyanide ion, the effe...

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Which of the following statements is/are true
\( \mathrm{P} \)
(1) In Ferrocyanide ion, the effective atomic
W
number is 36
(2) Chelating ligands are atleast bidentate ligands
(3) \( \left[\mathrm{CrCl}_{2}(\mathrm{CN})_{2}\left(\mathrm{NH}_{3}\right)_{2}\right]^{-} \)and \( \left[\mathrm{CrCl}_{3}\left(\mathrm{NH}_{3}\right)_{3}\right] \) both have \( \mathrm{d}^{2} \mathrm{sp}^{3} \) hybridization
(4) As the number of rings in complex increases, stability of complex (chelate) also increases
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