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

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
Which of the following element has maximum, first ionisation potential
  • A
    $V$
  • B
    $Ti$
  • C
    $Cr$
  • ✓
    $Mn$
✓

Answer

Correct option: D.
$Mn$
d
The first ionization energies of $Ti , V , Cr$ and $Mn$ are $656,650,652$ and $717\, kJ / mol$ respectively. Ionisation energy increase gradually but not strictly in a period from $L \rightarrow R$ hence, manganese has maximum first ionisation potential.

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