Total number of molecules/species from the following which will be paramagnetic is ………. \[ O_2, O_2^+, O_2^-, NO, NO_2, CO, K_2[NiCl_4], [Co(NH_3)_6]Cl_3, K_2[Ni(CN)_4] \]
Total number of molecules/species from the following which will be paramagnetic is ………. \[ O_2, O_2^+, O_2^-, NO, NO_2, CO, K_2[NiCl_4], [Co(NH_3)_6]Cl_3, K_2[Ni(CN)_4] \]
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Solution and Explanation
A species is paramagnetic if it has unpaired electrons:
- \( O_2 \) (paramagnetic) ✅
- \( O_2^+ \) (paramagnetic) ✅
- \( O_2^- \) (paramagnetic) ✅
- \( NO \) (paramagnetic) ✅
- \( NO_2 \) (paramagnetic) ✅
- \( CO \) (diamagnetic) ❌
- \( K_2[NiCl_4] \) (paramagnetic) ✅
- \( [Co(NH_3)_6]Cl_3 \) (diamagnetic) ❌
- \( K_2[Ni(CN)_4] \) (diamagnetic) ❌
Total paramagnetic species = 5.
Top Questions on Amines
The total number of compounds from below when treated with hot KMnO4 giving benzoic acid is:
The major product of the following reaction is:
- The purification method based on the following physical transformation is: \[ {Solid} \xrightarrow{{Heat}} {Vapour} \xrightarrow{{Cool}} {Solid} \]
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Identify correct statements:
(A) Primary amines do not give diazonium salts when treated with \({NaNO}_2\) in acidic condition.
(B) Aliphatic and aromatic primary amines on heating with \({CHCl}_3\) and ethanolic \({KOH}\) form carbylamines.
(C) Secondary and tertiary amines also give carbylamine test.
(D) Benzenesulfonyl chloride is known as Hinsberg’s reagent.
(E) Tertiary amines react with benzenesulfonyl chloride very easily.
Choose the correct answer from the options given below:
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