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4. d and f- block elements — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry4. d and f- block elements1 Mark
MCQ
Which of the following forms stable $+4$ oxidation state?
  • A
    $La (Z\, = 57)$
  • B
    $Eu (Z\, = 63)$
  • ✓
    $Ce (Z = 58)$
  • D
    $Gd (Z= 64)$
✓

Answer

Correct option: C.
$Ce (Z = 58)$
c
Only $Ce(Z\, = 58)$ shows stable $(+4)$ oxidation state

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