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MODERN PUBLICATION-p-BLOCK ELEMENTS-EXERCISE
- Unlike HCl, why HBr cannot be prepared by the action of concentrated s...
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- Assertion : Both rhombic and monoclinic sulphur exist as S8 but oxygen...
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- Which of the following reacts with NaNO2 + HCl at 273-278 K to give al...
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- Assertion : SF6 cannot be hydrolysed but SF4 can be. Reason : Six F at...
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- Which halogen has a tendency to form cations?
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- Give the disproportionation reaction of H3PO3.
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- Why ICI is more reactive than I2 ?
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- Name the halogen which forms only one oxoacid and write the formula of...
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- Arrange H2O, H2 S, H2 Se and H2 Te in order of their increasing acidic...
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- 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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- Draw the structures of SF4.
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- Draw the structure of XeF2, XeF4 and XeF6.
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- Give reasons for the following : SF6 is not readily hydrolysed.
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- Why does sulphur in vapour state exhibit paramagnetic character ?
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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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