1. Tardigrade
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  3. Chemistry
  4. The correct option(s) regarding the complex [Co(en)(NH3)3(H2O)]3+ (en = H2NCH2CH2NH2) is (are)

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Q. The correct option(s) regarding the complex $[Co(en)(NH_3)_3(H_2O)]^{3+} (en = H_2NCH_2CH_2NH_2)$ is (are)

JEE AdvancedJEE Advanced 2018Coordination Compounds

Solution:

(A) $[Co(en)(NH_3)_3 (H_2O)]^{+3}$ complex is type of $[M(AA)b_3 c ] $ have two G.I.
(B) If (en) is replaced by two cynide ligand, complex will be type of $ [Ma_3b_2c]$ and have 3 G.I.
(C) $[Co(en)(NH_3)_3(H_2O)]^{3+}$ have d6 configuration $(t^6_{2g})$ on central metal with SFL therefore it is dimagnetic in nature.
(D) Complex $ [Co(en)(NH_3)_3(H_2O)]^{3+}$ have lesser $CFSE (\Delta_O)$ value than $[Co(en)(NH_3)4]^{3+}$ therefore complex $ [Co(en)(NH_3)_3(H_2O)]^{+}$ absorbs longer wavelength for d-d transition.

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