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QJEE MAIN 2023
The correct order of the number of unpaired electrons in the given complexes is A. $\left[\mathrm{Fe}(\mathrm{CN})_6\right]^{3-}$ B. $\left[\mathrm{FeF}_6\right]^{3-}$ D. $[\mathrm{Cr}(\text { oxalate })]^{3-}$...
JEE MainChemistryMedium
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QJEE MAIN 2023
The number of species having a square planar shape from the following is _____.
JEE MainChemistryEasy
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QJEE MAIN 2023
The IUPAC name of $\mathrm{K}_3\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]$ is-
JEE MainChemistryEasy
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QJEE-Main_2023
If the CFSE of $\left[\mathrm{Ti}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$ is $-96.0 \mathrm{~kJ} / \mathrm{ml}$, this complex will absorb maximum at wavelength ___ nm.(nearest integer) Assume Planck's constant $...
JEE MainChemistryEasy
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QJEE MAIN 2023
The spin only magnetic moment of $\left[\mathrm{Mn}\left(\mathrm{H}_2 \mathrm{O}\right)_8\right]^{2+}$ complexes is $\_\_\_\_$ B.M. (Nearest integer)
(Given : Atomic no. of Mn is 25 )
JEE MainChemistryHard
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QJEE MAIN 2023
The denticity of the ligand present in the Fehling's reagent is_______.
JEE MainChemistryHard
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QJEE MAIN 2023
Total number of moles of AgCl precipitated on addition of excess of $\mathrm{AgNO}_3$ to one mole each of the following complexes $...
JEE MainChemistryEasy
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QJEE MAIN 2023
$1 \mathrm{~L}, 0.02 \mathrm{M}$ solution of $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{SO}_4\right] \mathrm{Br}$ is mixed with $1 \mathrm{~L}, 0.02 \mathrm{M}$ solution of $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Br}\right] \mathrm{SO}_4$. The resulting solution is...
JEE MainChemistryMedium
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QJEE MAIN 2023
Formulae for Nessler's reagent is:
JEE MainChemistryEasy
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QJEE MAIN 2023
Which element is not present in Nessler's reagent ?
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