1.

Give the oxidation state of halogen in the following. (a) OF_(2) (b) O_(2)F_(2) (c ) Cl_(2)O_(3) (d) I_(2)O_(4)

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Solution :(a) `OF_(2)`
`+2+2(x)=0`
`+2=-2x`
`2x=-2`
`x=-1`
(b) `O_(2)F_(2)`
`2(+1)+2x=0`
`2x=-2`
`x=-1`
(c ) `Cl_(2)O_(3)`
`2(x)+3(-2)=0`
`2x=+6`
`x=+3`
(d ) `I_(2)O_(4)`
`2(x)+4(-2)=0`
`2x=+8`
`x=+4`


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