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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 ions gives coloured solution
  • A
    $C{u^ + }$
  • B
    $Z{n^{ + 2 }}$
  • C
    $A{g^ + }$
  • ✓
    $F{e^{ + 2 }}$
✓

Answer

Correct option: D.
$F{e^{ + 2 }}$
d
(d)$F{e^{ + 2 }}$ due to presence of $4$  unpaired electrons.

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