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The metal complex ion that is paramagnetic is: (Atomic number of , , and )
The metal complex ion that is paramagnetic is:
(Atomic number of $\text{Fe} = 26$, $\text{Cu} = 29$, $\text{Co} = 27$ and $\text{Ni} = 28$)
- (a)$[\text{Fe}(\text{CN})_4]^{2-}$
- (b)$[\text{Co}(\text{NH}_3)_6]^{3+}$
- (c)$[\text{Ni}(\text{CN})_4]^{2-}$
- (d)$[\text{Cu}(\text{NH}_3)_4]^{2+}$
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From ISC 2024 Chemistry Paper 1, question 1(B)(ii).