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

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 4. d and f- block elements4 Marks
MCQ
Cuprous ion is colourless, while cupric ion is coloured because
  • A
    Both have unpaired electrons in $d$-orbital
  • ✓
    Cuprous ion has a completed $d$-orbital and cupric ion has an incomplete $d$-orbital
  • C
    Both have half-filled $p$and $d$-orbitals
  • D
    Cuprous ion has incomplete $d$-orbital and cupric ion has a completed $d$-orbital
✓

Answer

Correct option: B.
Cuprous ion has a completed $d$-orbital and cupric ion has an incomplete $d$-orbital
b
(b)Cuprous ion $(C{u^ + })$ $3{d^{10}}$ Completely filled $d $ sub shell

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