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MODERN PUBLICATION-p-BLOCK ELEMENTS-EXERCISE
- Why does R3P=O exist but R3N=O does not? (R= alkyl group)
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- Comment on nature of two S-O bond formed in SO2 molecule. Are the two ...
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- Express 2062 in roman numbers.
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- Give hybridization and draw structure of XeF4.
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- Give reasons for the following : SF6 is not readily hydrolysed.
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- Give reasons for the following: Sulphur vapour is paramagnetic.
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- What are the interhalogen compounds ? Why are these more reactive than...
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- Considering the parameters such as bond dissociation enthalpy, electro...
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- Why is helium used in diving apparatus?
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- Account for the following : NH3 is a stronger base than PH3.
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- Sulphur exhibits greater tendency for catenation than seleniun. Explai...
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- How H(3)PO(3) is diprotic acid?
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- Write the four oxoacids of chlorine. Explain their relative acidic cha...
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- Explain the chemistry of manufacture of nitric acid by Ostwald’s proce...
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- Complete the following chemical equation : Ca3P2(s) + H2O (l) rarr .....
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- Complete the following chemical equation : F2(g)+ H2O(l) rarr ...........
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- Complete the following equation : Ca3 (PO4)2 + SiO2 + C rarr
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- Nitrogen exists as diatomic molecule and phosphorus as P4. Why ?
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- Give the resonating structures of NO2 and N2O5.
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- Give two examples to show the anomalous behaviour of fluorine.
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