Which of the following statements is/are correct? (1) \( \left.\mathrm{Ni}(\mathrm{CN})_{4}\righ...

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Which of the following statements is/are correct?
(1) \( \left.\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-} \) - Square planar, diamagnetic
(2) \( \mathrm{Ni}(\mathrm{dmg})_{2} \) - Square planar, diamagnetic
P
(3) \( \left[\mathrm{NiCl}_{4}\right]^{2}- \) Tetrahedral, paramagnetic
W
(4) All of these
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