Which of the following statements is correct? (A) The \( \left[\mathrm{Ni}(\mathrm{CN})_{4}\righ...
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0Which of the following statements is correct?
(A) The \( \left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-} \) ion has tetrahedral geometry and is diamagnetic.
(B) The \( \left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-} \) ion has a square-planar geometry and is paramagnetic.
(C) The \( \left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-} \) ion has a square-planar geometry and is diamagnetic.
(D) The \( \left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+} \) ion has a tetrahedral geometry and is diamagnetic.
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