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2. structure of atom — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry2. structure of atom1 Mark
MCQ
Electronic configuration of ferric ion is
  • ✓
    $[Ar]\,3{d^5}$
  • B
    $[Ar]\,3{d^7}$
  • C
    $[Ar]\,3{d^3}$
  • D
    $[Ar]\,3{d^8}$
✓

Answer

Correct option: A.
$[Ar]\,3{d^5}$
a
(a) $F{e_{26}} = [Ar]\,3{d^6}4{s^2}$

$F{e^{3 + }} = [Ar]\,3{d^5}4{s^0}.$

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