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Transition and Inner Transition Elements — Chemistry STD 12 — Question

Tamilnadu BoardEnglish MediumSTD 12ChemistryTransition and Inner Transition Elements1 Mark
MCQ
Find Out the correct pair.
  • ✓
    $CrO _4^{-}$and $Cr _2 O _7^{2-}$
  • B
    $MnO _4^{-}$and $MnO _4^{2-}$
  • C
    $H _2 CrO _4$ and $HMnO _4$
  • D
    $Cr _2 O _3$ and $Mn _2 O _7$
✓

Answer

Correct option: A.
$CrO _4^{-}$and $Cr _2 O _7^{2-}$
$CrO _4^{-}$and $Cr _2 O _7^{2-}$
In this pair $Cr$ has +6 oxidation states whereas in others the metal has different oxidation state.

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