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Which of the following complex is following
\( \mathrm{P} \)
sidwick EAN rule?
W
(1) \( \left[\mathrm{Ag}\left(\mathrm{S}_{2} \mathrm{O}_{3}\right)_{2}\right]^{3-} \) (when only ' \( \mathrm{S} \) ' atom is the donor atom)
(2) \( \left[\mathrm{Cd}(\mathrm{CN})_{4}\right]^{2-} \)
(3) \( \left[\operatorname{Pt}(\mathrm{en})_{2}\right]^{2+} \)
(4) \( \left[\mathrm{Ni}\left(\sigma-\mathrm{C}_{3} \mathrm{H}_{5}\right) \operatorname{Br}\left(\mathrm{NH}_{3}\right)_{2}\right] \)
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