JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry
Which one of the following complexes is violet in colour?
- A \(\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}\)
- B \(\left[\mathrm{Fe}(\mathrm{SCN})_{6}\right]^{4-}\)
- C \(\mathrm{Fe}_{4}\left[\mathrm{Fe}\left(\mathrm{CN}_{6}\right)\right]_{3} \cdot \mathrm{H}_{2} \mathrm{O}\)
- D \(\left[\mathrm{Fe}(\mathrm{CN})_{5} \mathrm{NOS}\right]^{4}\)
Answer & Solution
Correct Answer
(D) \(\left[\mathrm{Fe}(\mathrm{CN})_{5} \mathrm{NOS}\right]^{4}\)
Step-by-step Solution
Detailed explanation
\((A)\) \(\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-} \rightarrow\) Pale yellow solution \((B)\) \(\left[\mathrm{Fe}(\mathrm{SCN})_{6}\right]^{4-} \rightarrow\) Blood red colour \((C)\)…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- The type of hybridisation and magnetic property of the complex \(\left[\mathrm{MnCl}_{6}\right]^{3-}\), respectively, are :JEE Mains 2021 Medium
- The calculated spin-only magnetic moments of \(\mathrm{K}_3\left[\mathrm{Fe}(\mathrm{OH})_6\right]\) and \(\mathrm{K}_4\left[\mathrm{Fe}(\mathrm{OH})_6\right]\) respectively are _______.JEE Mains 2025 Medium
- Similarity in chemical properties of the atoms of elements in a group of the Periodic table is most closely related toJEE Mains 2014 Easy
- Thyroxine, the hormone has given below structure
The percentage of iodine in thyroxine is ____ \(\%\). (nearest integer)
(Given molar mass in \(\mathrm{g} \mathrm{mol}^{-1} \mathrm{C}: 12. \mathrm{H}: 1, \mathrm{O}: 16\), \(\mathrm{N}: 14, \mathrm{I}: 127)\)JEE Mains 2025 Medium - For a concentrated solution of a weak electrolyte ( \(K _{ eq }=\) equilibrium constant) \(A _2 B _3\) of concentration ' \(c\) ', the degree of dissociation " \(\alpha\) ' isJEE Mains 2023 Medium
- A soft drink was bottled with a partial pressure bf \(CO _{2}\) of \(3\) bar over the liquid at room temperature. The partial pressure of \(CO _{2}\) over the solution approaches a value of 30 bar when \(44\, g\) of \(CO _{2}\) is dissolved in \(1\, kg\) of water at room temperature. The approximate \(pH\) of the soft drink is............... \(\times 10^{-1}\) (First dissociation constant of \(H _{2} CO _{3}=4.0 \times 10^{-7}\)\(\log 2=0.3 ;\) density of the soft \(\left.\operatorname{drink}=1\, g\, mL ^{-1}\right)\)JEE Mains 2020 Medium
More PYQs from JEE Mains
- A metallic rod of length ' \(L\) ' is rotated with an angular speed of ' \(\omega\) ' normal to a uniform magnetic field ' \(B\) ' about an axis passing through one end of rod as shown in figure. The induced emf will be :
JEE Mains 2023 Medium - The sum of the series \(1 + 2 \times 3 + 3 \times 5 + 4 \times 7 + .......\) upto \(11^{th}\) term isJEE Mains 2019 Hard
- Sodium light of wavelengths \(650\, nm\) and \(655\, nm\) is used to study diffraction at a single slit of aperture \(0.5\, mm\). The distance between the slit and the screen is \(2.0 \,m\). The separation between the positions of the first maxima of diffraction pattern obtained in the two cases is \(\times 10^{-5} \,m\)JEE Mains 2022 Medium
- Let \(f(x)=\int \frac{d x}{\left(3+4 x^2\right) \sqrt{4-3 x^2}},|x| < \frac{2}{\sqrt{3}}\). If \(f(0)=0\) and \(f(1)=\frac{1}{\alpha \beta} \tan ^{-1}\left(\frac{\alpha}{\beta}\right), \alpha, \beta > 0\), then \(\alpha^2+\beta^2\) is equal to \(.........\).JEE Mains 2023 Hard
- Let \(A :\{1,2,3,4,5,6,7\}\). Define \(B =\{ T \subseteq A\) : either \(1 \notin T\) or \(2 \in T \}\) and \(C = \{ T \subseteq A : T\) the sum of all the elements of \(T\) is a prime number \(\}\). Then the number of elements in the set \(B \cup C\) is \(\dots\dots\)JEE Mains 2022 Hard
- A wire of length \(2\) units is cut into two parts which are bent respectively to form a square of side \(= x\) units and a circle of radius \(= r\) units. If the sum of the areas ofthe square and the circle so formed is minimum, then:JEE Mains 2016 Hard