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Oxygen does not show oxidation states of...

Oxygen does not show oxidation states of `+4 " and " +6` like sulphur. Explain.

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Sulphur shows`+4 " and " +6` oxidation states due to the presence of vacant 3d orbitals to which electrons can be promoted from 3s and 3p filled orbitals. Since oxygen atom does not have 2d orbitals, no electorn promotion is possible in this case. Therefore, oxygen cannot show `+4 " and " +6` oxidation states in compounds. For more details, consult text part.
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DINESH PUBLICATION-THE P-BLOCK ELEMENTS -Concept Based Questions
  1. Sulphur is a solid while oxygen is a gas at room temperature. Why ?

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  2. SF(6) is a well known compound while SH(6) does not exist. Explain.

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  3. Oxygen does not show oxidation states of +4 " and " +6 like sulphur. E...

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  4. H(2)O is liquid while H(2)S is a gas at room temperature. Explain.

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  5. Sulphur dioxide is a more powerful reducing agent in the alkaline medi...

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  6. Bond angle in H(2)S is lower than in H(2)O. Justify.

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  7. Hydrogen sulphide cannot be dried by passing through conc. H(2)SO(4) ....

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  8. H(2)S is a stronger acid than H(2)O. Explain

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  9. Sulphur vapours exhibit some paramagnetic behaviour. Explain.

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  10. SF(6) is not easily hydrolysed whereas SF(4) can be. Assign reason.

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  11. Bond dissociation enthalpy of F-F bond is less than that of Cl-Cl bond...

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  12. Sulphur disappears when boiled with aqueous solution of sodium sulphit...

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  13. Chlorine water has both oxidising as well as bleaching properties ? Ex...

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  14. Oxygen molecule has the formula O(2) while sulphur is S(8). Why ?

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  15. Why is H(2)S less acidic than H(2)Te ?

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  16. Why does burning Mg continue to burn in a jar containing NO but burnin...

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  17. Reducing character decreases from SO(2) " to " TeO(2). Explain.

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  18. Why is iodine more soluble in KI solution than in water ?

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  19. Iodine is liberated in the reaction between KI and CU^(2+) ions but ch...

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  20. Lithium fluroide (LiF) is mainly ionic but lithium iodide (LiI) is cov...

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