JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry
Consider the following metal complexes. \({\left[ Co \left( NH _{3}\right)\right]^{3+}}\) \({\left[ CoCl \left( NH _{3}\right)_{5}\right]^{2+}}\) \({\left[ Co ( CN )_{6}\right]^{3-}}\) \({\left[ Co \left( NH _{3}\right)_{5}\left( H _{2} O \right)\right]^{3+}}\) The spin-only magnetic moment value of the complex that absorbs light with shortest wavelength is \(B.M.\) (Nearest integer)
- A \(3\)
- B \(0\)
- C \(2\)
- D \(1\)
Answer & Solution
Correct Answer
(B) \(0\)
Step-by-step Solution
Detailed explanation
\(\Delta_{0} \propto \frac{1}{\lambda}\) Here, \(CN\) being SFL will have maximum \(CFSE\) So, \(\left[ Co ( CN )_{6}\right]^{3-}\) will be \(d ^{2} sp ^{3}, \mu=0\)
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
- Consider the following reaction \(\mathrm{MnO}_2+\mathrm{KOH}+\mathrm{O}_2 \rightarrow \mathrm{A}+\mathrm{H}_2 \mathrm{O} .\) Product ' \(A\) ' in neutral or acidic medium disproportionate to give products ' \(\mathrm{B}\) ' and ' \(\mathrm{C}\) ' along with water. The sum of spin-only magnetic moment values of \(B\) and \(C\) is _______ \(BM\). (nearest integer) (Given atomic number of \(\mathrm{Mn}\) is \(25\) )JEE Mains 2024 Medium
- Which of the following gives a positive test with ninhydrin?JEE Mains 2024 Medium
- MX is a sparingly soluble salt that follows the given solubility equilibrium at 298 K \(MX ( s ) \rightleftharpoons M ^{+}( aq )+ X ^{-}( aq ) ; K _{ sp }=10^{-10}\) If the standard reduction potential for \(M ^{+}( aq ) \xrightarrow{+ e ^{-}} M ( s )\) is \(\left( E _{ M ^{+} / M }^{\ominus}\right)=0.79 V\), then the value of the standard reduction potential for the metal/metal insoluble salt electrode \(E _{ X ^{-} / MX ( s ) / M }^{\ominus}\) is __________ mV. (nearest integer) [Given: \(\frac{2.303 R T}{F}=0.059 V\) ]JEE Mains 2026 Hard
- Molality of an aqueous solution of urea is \(4.44 \mathrm{~m}\). Mole fraction of urea in solution is \(x \times 10^{-3}\). Value of \(x\) is _______. (integer answer)JEE Mains 2024 Medium
- The number of bridging \(CO\) ligand\((s)\) and \(Co-Co\) bond\((s)\) in \(Co_2 (CO)_8\) respectively areJEE Mains 2019 Medium
- The vapour pressures of two volatile liquids \(A\) and \(B\) at \(25^{\circ} C\) are \(50\, Torr\) and \(100\, Torr,\) respectively. If the liquid mixture contains \(0.3\) mole fraction of \(A\), then the mole fraction of liquid \(B\) in the vapour phase is \(\frac{x}{17}\). The value of \(x\) is \(...\)JEE Mains 2022 Medium
More PYQs from JEE Mains
- \(1\, L\) aqueous solution of \(H _{2} SO _{4}\) contains \(0.02\, m\) mol \(H _{2} SO _{4} .50\, \%\) of this solution is diluted with deionized water to give \(1\, L\) solution \((A).\) In solution \((A)\), \(0.01\, m \,mol\) of \(H _{2} SO _{4}\) are added. Total \(m\) \(mols\) of \(H _{2} SO _{4}\) in the final solution is \(......\times 10^{3}\, m\, mols.\)JEE Mains 2022 Hard
- If \(\mathrm{n}\) is the number density and \(\mathrm{d}\) is the diameter of the molecule, then the average distance covered by a molecule between two successive collisions (i.e. mean free path) is represented by _______.JEE Mains 2024 Hard
- The metal \(d-\) orbital that can directly facing the ligands in \(K_3[Co(CN)_6]\) areJEE Mains 2019 Hard
- If \(\vec{E}\) and \(\vec{K}\) represent electric field and propagation vectors of the EM waves in vacuum, then magnetic field vector is given by : \((\omega-\) angular frequency) :JEE Mains 2023 Medium
- \(\lim _{n \rightarrow \infty}\left[\frac{1}{n}+\frac{n}{(n+1)^{2}}+\frac{n}{(n+2)^{2}}+\ldots \ldots .+\frac{n}{(2 n-1)^{2}}\right]\) is equal to ...... .JEE Mains 2021 Hard
- Consider a \(72\, cm\) long wire \(AB\) as shown in the figure. The galvanometer jockey is placed at \(P\) on \(A B\) at a distance \(x cm\) from \(A\). The galvanometer shows zero deflection. The value of \(x,\) to the nearest integer, is ..... \(cm\)
JEE Mains 2021 Medium