5. K3crO8 Oxidation number of cr & structure

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Q. The oxidation number of chromium in

K_{2} C r O_{4}

is:

Q. The oxidation number of

C r

C r O_{5}

which has the following structure is:

Q. When

K_{2} C r_{2} O_{7}

is converted into

K_{2} C r O_{4},

the change in oxidation no. of Cr is:

Calculate the oxidation number of sulphur, chromium and nitrogen in $H_{2} S O_{5},$
$C r_{2} O_{7}^{2 -}$ and $N O_{3 -}^{-}$ . Suggest structure of these compounds. Count for the fallacy.

$x C r_{2} 2 - O_{7}^{2 -}$

$x N 2 - O_{3}^{-}$

Q. The oxidation number of

C r

C r O_{5}

is:

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