Identify correct statements from below: A. The chromate ion is square planar. B. Dichromates are generally prepared from chromates. C. The green manganate ion is diamagnetic. D. Dark green coloured K2

Question

Identify correct statements from below: A. The chromate ion is square planar. B. Dichromates are generally prepared from chromates. C. The green manganate ion is diamagnetic. D. Dark green coloured K2MnO4 disproportionates in a neutral or acidic medium to give permanganate. E. With increasing oxidation number of transition metal, ionic character of the oxides decreases. Choose the correct answer from the options given below:

(A) B, C, D only
(B) A, D, E only
(C) A, B, C only
(D) B, D, E only

Prashant Kotian · Accepted Answer

Correct answer: D. A. CrO4 2– is tetrahedral B. 2Na2CrO4 + 2H+  Na2Cr2O7 + 2Na+ + H2O C. As per NCERT, green manganate is paramagnetic with 1 unpaired electron. D. Statement is correct E. Statement is correct

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