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 $\mathrm{K}_2 \mathrm{MnO}_4$ 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:
Solution
<p>A. $\mathrm{CrO}_4{ }^{2-}$ is tetrahedral</p>
<p>B. $$2 \mathrm{Na}_2 \mathrm{CrO}_4+2 \mathrm{H}^{+} \rightarrow \mathrm{Na}_2 \mathrm{Cr}_2 \mathrm{O}_7+2 \mathrm{Na}^{+}+\mathrm{H}_2 \mathrm{O}$$</p>
<p>C. As per NCERT, green manganate is paramagnetic with 1 unpaired electron.</p>
<p>D. Statement is correct</p>
<p>E. Statement is correct</p>
About this question
Subject: Chemistry · Chapter: d and f Block Elements · Topic: Properties of Transition Metals
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