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Q. Choose the correct increasing order of the oxidation state of the central metal atom in the following oxoanions.
$VO _2^{+}, VO ^{2+}, TiO ^{2+}, CrO _4^{2-}$

The d-and f-Block Elements

Solution:

$\overset{+4}{VO^{2+}} \simeq \overset{+4}{TiO^{2+}} < \overset{+5}{VO_2^+} < \overset{+6}{Cr} O_4^{2-}$