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Chemistry · PYQ NEET UG 2025
हिन्दीWhich of the following are paramagnetic? A. \( [\text{NiCl}_4]^{2-} \) B. \( \text{Ni(CO)}_4 \) C. \( [\text{Ni(CN)}_4]^{2-} \) D. \( [\text{Ni(H}_2\text{O)}_6]^{2+} \) \nE. \( \text{Ni(PPh}_3)_4 \) Choose the correct answer from the options given below:
Correct answer · Option 3
A and D only
Explanation
\( [\text{NiCl}_4]^{2-} \) and \( [\text{Ni(H}_2\text{O)}_6]^{2+} \) contain unpaired electrons (2 each), making them paramagnetic.
