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Q.

Which of the following statements is not true for halogens?

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a

Chlorine has the highest electron-gain enthalpy.

b

All form oxoacid of the type HXO2

c

All are oxidizing agents.

d

All but fluorine show positive oxidation states.

answer is A.

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Detailed Solution

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Fluorine shows only one oxidation state and other halogens shows -ve and +ve oxidation states. Due to high electronegativity and small size, only Fluorine form one oxoacid that is HOF but does not form HFO2
 

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