MCQ
Which of the following complex ions is not expected to absorb visible light?
- ✓$[Ni(CN)_4]^{2-}$
- B$[Cr(NH_3)_6]^{3+}$
- C$[Fe(H_2O)_6]^{2+}$
- D$[Ni(H_2O)_6]^{2+}$
✓
Answer
Correct option: A.
$[Ni(CN)_4]^{2-}$
a
A transition metal complex absorbs visible tight only if it has unpaired electrons.
A transition metal complex absorbs visible tight only if it has unpaired electrons.
No unpaired electron so does not absorb visible light.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Which of the following compounds exhibits linkage isomerism
With increase of temperature, which of these changes
The best reagent for converting $2-$phenylpropanamide into $2-$phenylpropanamine is $........$
→Which of the following is first formed inert gas compound?
$S_{N^1}$ and $S_{N^2}$ products are same with (excluding stereoisomer)
→A first order reaction has the rate constant, $k =4.6$ $\times 10^{-3} s ^{-1}$. The number of correct statement/s from the following is/are
→Given : $\log 3=0.48$
$A.$ Reaction completes in $1000\,s$.
$B.$ The reaction has a half-life of $500\, s$.
$C.$ The time required for $10\, \%$ completion is 25 times the time required for $90 \,\%$ completion.
$D.$ The degree of dissociation is equal to $\left(1-e^{-k t}\right)$.
$E.$ The rate and the rate constant have the same unit.
$[Co(en)_3]^{3+}$ ion is expected to show
→Acetal or ketal is :
Order of liquification of noble gases is
Consider the acidity of the following carboxylic acids:
(i) PhCOOH
(ii) $o - NO _2 C _6 H _4 COOH$
(iii) $p - NO _2 C _6 H _4 COOH$
(iv) $m - NO _2 C _6 H _4 COOH$
Which of the following (decreasing) order is correct :
→(i) PhCOOH
(ii) $o - NO _2 C _6 H _4 COOH$
(iii) $p - NO _2 C _6 H _4 COOH$
(iv) $m - NO _2 C _6 H _4 COOH$
Which of the following (decreasing) order is correct :