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STD 12 - 4. d and f- block elements — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 4. d and f- block elements4 Marks
MCQ
$Zn$ and $Cd$ metals do not show variable valency because
  • A
    They have only two electrons in the outermost subshells
  • ✓
    Their $d-$ subshells are completely filled
  • C
    Their $d-$ subshells are partially filled
  • D
    They are relatively soft me
✓

Answer

Correct option: B.
Their $d-$ subshells are completely filled
b
$d$-block elements show variable valency due to their incomplete $d$-orbitals but as $d$-orbitals of $Zn$ and $Cd$ are fully filled so they do not show variable valency.

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