MCQ
Aromatic compounds burn with sooty flame because
- AThey have a ring structure of carbon atoms
- BThey have a relatively high percentage of hydrogen
- ✓They have a relatively high percentage of carbon
- DThey resist reaction with oxygen of air
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| List-I (Element) | List-II (Electronic Configuration) | ||
| A. | N | I. | $[ Ar ] 3 d^{10} 4 s^2 4 p ^5$ |
| B. | S | II. | $[ Ne ] 3 s^2 3 p ^4$ |
| C. | Br | III. | $[ He ] 2 s^2 2 p ^3$ |
| D. | Kr | IV. | $[ Ar ] 3 d^{10} 4 s^2 4 p ^6$ |
$(A)\,\,\,\,[Ni(H_2O)_5NH_3]^{2+},$
$(B)\,\,\,\,[Ni(H_2O)_4(NH_3)_2]^{2+}$ and
$(C)\,\,\,\,[Ni(H_2O)_3(NH_3)_3]^{2+}$ is