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Question
During chemistry class, a teacher wrote \[\ce{[Ni(CN)4]^2-}\] as a coordination complex ion on the board. The students were asked to find out the magnetic behaviour and shape of the complex. Pari, a student, wrote the answer paramagnetic and tetrahedral whereas another student Suhail wrote diamagnetic and square planer.
Evaluate Pari’s and Suhail’s responses.
Solution
According to Valence Bond Theory (VBT), \[\ce{[Ni(CN)4]^2-}\] is diamagnetic and square planar.
Suhail’s response was correct.
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