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Q.
Which of the following complexes is square planar and diamagnetic?
J & K CETJ & K CET 2013Coordination Compounds
Solution:
ln $Ni ( CN )_{4}, Ni$ is in $dsp ^{2}$
hybridised and the shape is square planar. The square planar geometry results in diamagnetic magnetism as all the electrons are paired resulting in zero spin.