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What is the reason that in oxyacids the one in which the central atom has high oxidation number is more acidic ?

What is the reason that in oxyacids the one in which the central atom has high oxidation number is more acidic ?

Grade:12

1 Answers

SAGAR SINGH - IIT DELHI
878 Points
13 years ago

Dear student,

All oxoacids have the acidic hydrogen bound to an oxygen atom, so bond strength (length) is not a factor, as it is with binary nonmetal hydrides. Rather, the electronegativity of the central atom (E) and the number of O atoms determine oxoacid acidity. With the same central atom E, acid strength increases as the number of oxygen attached to E increases. With the same number of oxygens around E, acid strength increases with the electronegativity of E.

 

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Sagar Singh

B.Tech, IIT Delhi

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