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InterviewSolution
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The mixture covalence of oxygen isA. twoB. fourC. ThreeD. six |
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Answer» Correct Answer - 2 In practice ,`O` is never more than divalent because when it has formed two covalent bonds it has attained a noble gas configuration ,and there are no low energy empty orbitals (such as d-orbitals )which can be used to form further bonds.Using its two lone pairs it can extend its covalence to four. However, the rest of the Group `16` element have empty d orbitals in their valence shell which can be used for bonding and hence they can form four or six bonds by unpiring ns and np electrons. The `+4` show sboth oxidizing and reducting properties.Fluorine and oxygen bring out the maximum oxidation state of `+6`.Compounds in the `+6`state show oxidizing properties.The higher oxidation state becomes less stable on descending the group.These compounds are typically volatile because they are covalents. |
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