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Oxides of Group 16

How does the ...

Question

How does the oxidation number of oxygen changes in different cases? Why does this happen?Give reason for each case.

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Solution

Oxygen exist in three different form.
$O x i d e s - O^{2 -} . S o t h e o x i d a t i o n s t a t e i s - 2 . P e r o x i d e s - {O_{2}}^{2 -} . S o t h e o x i d a t i o n s t a t e o f o x y g e n = - 1 (2 x = - 2 : x = - 1) S u p e r o x i d e - {O_{2}}^{-} . S o t h e o x i d a t i o n s t a t e o f o x y g e n = - 0.5 (2 x = - 1 : x = - 0.5) F o r e x ., L i_{2} O - O x i d e . (o x i d a t i o n s t a t e = - 2) N a_{2} O_{2} - P e r o x i d e s (o x i d a t i o n s t a t e = - 1) K O_{2} - S u p e r o x i d e (o x i d a t i o n s t a t e = - 0.5)$

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