Select incorrect statement(s) for \( \left[\mathrm{Cu}(\mathrm{CN})_{4}\right]^{3-} \), \( \left[\mathrm{Cd}(\mathrm{CN})_{4}\right]^{2-} \) and \( \left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+} \) complex ion.
\( \mathrm{P} \)
(A) Both \( \left[\mathrm{Cd}(\mathrm{CN})_{4}\right]^{2-} \) and \( \left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+} \) have square
W planar geometry
(B) \( \left[\mathrm{Cu}(\mathrm{CN})_{4}\right]^{3-} \) and \( \left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+} \) have equal no. of unpaired electron
(C) \( \left[\mathrm{Cu}(\mathrm{CN})_{4}\right]^{3} \) and \( \left[\mathrm{Cd}(\mathrm{CN})_{4}\right]^{2-} \) can be separated from the mixture on passing \( \mathrm{H}_{2} \mathrm{~S} \) gas
(D) all the three complexes have magnetic moment equal to zero
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