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Account for the following: (a) Sulphur...

Account for the following:
(a) Sulphurous acid is a reducing agent.
(b) Fluorine forms only one oxoacid.
(c ) Boiling point of noble gases increases from He to Rn.

Text Solution

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(a) Sulphurous acid is a reducing agent
`H_(2)SO_(3) +H_(2)O +2Fe^(3+) to 2Fe^(2+)+SO_(4)^(2-)+4H^(+)`
`Fe^(3+)` ions are reduced to `Fe^(2+)` ions.
(b) Fluorine forms only one oxoacid.
Due to high electronegativity and small size, fluorine forms only one oxoacid.
(c ) Boiling point of noble gases increases from He to Rn.
Size of the atom increases from He to Rn. Therefore, the van der Waals force of attraction, which is proportional to surface area also increases from He to Rn. Thus, boiling point increases from He to Rn.
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