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 K_2 MnO_4 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:
Select the correct option:
A
B, C, D only
B
A, D, E only
C
A, B, C only
D
B, D, E only
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
A. $\mathrm{CrO}_4{ }^{2-}$ is tetrahedral
B. $2 \mathrm{Na}_2 \mathrm{CrO}_4+2 \mathrm{H}^{+} \rightarrow \mathrm{Na}_2 \mathrm{Cr}_2 \mathrm{O}_7+2 \mathrm{Na}^{+}+\mathrm{H}_2 \mathrm{O}$
C. As per NCERT, green manganate is paramagnetic with 1 unpaired electron.
D. Statement is correct
E. Statement is correct
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