A coordination complex compound of cobalt has molecular formula containing five ammonia molecules, one nitro group and two chlorine atoms for one cobalt atom. One mole of this compound produces three mole ions in an aqueous solution.On reacting this solution with excess of silver nitrate solutions, two moles of AgCl get precipitated. The ionic formula of this complex would be
- $[Co(NH_3)_4NO_2Cl] [(NH_3)Cl]$
- $[Co(NH_3)_5Cl] [Cl(NO_2)]$
- $[Co(NH_3)_5(NO_2)]Cl_2$
- $[Co(NH_3)]_5.[(NO_2)_2Cl_2]$
The Correct Option is C
Solution and Explanation
Top Questions on coordination compounds
- A chromium complex with formula CrCl$_3\cdot$6H$_2$O has a spin only magnetic moment value of 3.87 BM and its solution conductivity corresponds to 1:2 electrolyte. 2.75 g of the complex solution was initially passed through a cation exchanger. The solution obtained after the process was reacted with excess of AgNO$_3$. The amount of AgCl formed in the above process is _________ g (Nearest integer).
(Given: Molar mass in g mol$^{-1}$ Cr: 52; Cl: 35.5; Ag:108; O:16; H:1)- JEE Main - 2026
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Consider a weak base \(B\) of \(pK_b = 5.699\). \(x\) mL of \(0.02\) M HCl and \(y\) mL of \(0.02\) M weak base \(B\) are mixed to make \(100\) mL of a buffer of pH \(=9\) at \(25^\circ\text{C}\). The values of \(x\) and \(y\) respectively are
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- \(20.0\,\text{dm}^3\) of an ideal gas \(X\) at \(600\) K and \(0.5\) MPa undergoes isothermal reversible expansion until the pressure of the gas becomes \(0.2\) MPa. Which of the following option is correct? (Given: \(\log 2 = 0.3010\), \(\log 5 = 0.6989\))
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- Chemistry
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- Given below are two statements:
Statement I: Hybridisation, shape and spin only magnetic moment of $\mathrm{K_3[Co(CO_3)_3]}$ is $sp^3d^2$, octahedral and $4.9$ BM respectively.
Statement II: Geometry, hybridisation and spin only magnetic moment values (BM) of the ions $\mathrm{[Ni(CN)_4]^{2-}}$, $\mathrm{[MnBr_4]^{2-}}$ and $\mathrm{[CoF_6]^{3-}}$ respectively are square planar, tetrahedral, octahedral; $dsp^2$, $sp^3$, $sp^3d^2$ and $0$, $5.9$, $4.9$.
In the light of the above statements, choose the correct answer from the options given below:
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- Chemistry
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Given below are two statements regarding conformations of n-butane. Choose the correct option.
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In an oscillating spring mass system, a spring is connected to a box filled with sand. As the box oscillates, sand leaks slowly out of the box vertically so that the average frequency ω(t) and average amplitude A(t) of the system change with time t. Which one of the following options schematically depicts these changes correctly?
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Among the following, choose the ones with an equal number of atoms.
- 212 g of Na2CO3 (s) [molar mass = 106 g]
- 248 g of NaNO3 (s) [molar mass = 62 g]
- 240 g of NaOH (s) [molar mass = 40 g]
- 12 g of H2 (g) [molar mass = 2 g]
- 220 g of CO2 (g) [molar mass = 44 g]
Choose the correct answer from the options given below:
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Concepts Used:
Coordination Compounds
A coordination compound holds a central metal atom or ion surrounded by various oppositely charged ions or neutral molecules. These molecules or ions are re-bonded to the metal atom or ion by a coordinate bond.
Coordination entity:
A coordination entity composes of a central metal atom or ion bonded to a fixed number of ions or molecules.
Ligands:
A molecule, ion, or group which is bonded to the metal atom or ion in a complex or coordination compound by a coordinate bond is commonly called a ligand. It may be either neutral, positively, or negatively charged.