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  4. x and y are the oxidation state of metal and oxygen in sodium peroxide, lithium oxide and potassium superoxide the value of 5 Sigma x+ Sigma y is

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Q. $x$ and $y$ are the oxidation state of metal and oxygen in sodium peroxide, lithium oxide and potassium superoxide the value of $5 \Sigma x+\Sigma y$ is

The s-Block Elements

Solution:

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$\Sigma x=+3 ; \Sigma y=-3.5$
$5 \Sigma x+\Sigma y=5(+3)+(-3.5)=11.5$