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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
Cuprous ion is colourless while cupric ion is coloured because
  • A
    Both have half filled $p $ and $d-$ orbitals
  • B
    Cuprous ion has incomplete $d-$ orbital and cupric ion has a complete $d-$ orbital
  • C
    Both have unpaired electrons in the $d-$ orbitals
  • ✓
    Cuprous ion has a complete $ d-$ orbital and cupric ion has an incomplete $ d-$ orbital
✓

Answer

Correct option: D.
Cuprous ion has a complete $ d-$ orbital and cupric ion has an incomplete $ d-$ orbital
d
It’s Obvious.
 

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