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3. Classification of elements and periodicity in properties — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
Which of the following does not represent the correct order of the property indicated
  • ✓
    $S{c^{3 + }} > C{r^{3 + }} > F{e^{3 + }} > M{n^{3 + }}$ ionic radii
  • B
    $Sc < Ti < Cr < Mn$ Density
  • C
    $M{n^{2 + }} > N{i^{2 + }} < C{o^{2 + }} < F{e^{2 + }}$ ionic radii
  • D
    $FeO < CaO > MnO > CuO$ Basic nature
✓

Answer

Correct option: A.
$S{c^{3 + }} > C{r^{3 + }} > F{e^{3 + }} > M{n^{3 + }}$ ionic radii
a
(a) $S{c^{3 + }} > C{r^{3 + }} > F{e^{3 + }} > M{n^{3 + }}$ the correct order is $C{r^{ + 3}} > M{n^{ + 3}} > F{e^{ + 3}} > S{c^{ + 3}}$

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