Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour ?A. (a) `[Cr(NH_3)_6]^(3+)`B. (b) `[Co(NH_3)_6]^(3+)`C. (c) `[Ni(NH_3)_6]^(2+)`D. (d) `[Zn(NH_3)_6]^(2+)`

Which one of the following is an outer orbital complex and exhibits pa

1.	Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour ?A. (a) `[Cr(NH_3)_6]^(3+)`B. (b) `[Co(NH_3)_6]^(3+)`C. (c) `[Ni(NH_3)_6]^(2+)`D. (d) `[Zn(NH_3)_6]^(2+)`
Answer» Correct Answer - C `._(28)Ni^(2+)` in `[Ni(NH_3)_6]^(2+)` has `1s^2, 2s^2 2p^6, 3s^2 3p^6 3d^8` configuration. It uses 4th orbital to show `sp^3d^2`-hybridizaation to form outer complex with 2 unpaired electrons in 3d-orbital.

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Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour ?A. (a) `[Cr(NH_3)_6]^(3+)`B. (b) `[Co(NH_3)_6]^(3+)`C. (c) `[Ni(NH_3)_6]^(2+)`D. (d) `[Zn(NH_3)_6]^(2+)`

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