What is the oxidation number of phosphorus in | vedclass

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Question

(C) The chemical formula for calcium phosphate is $Ca_3(PO_4)_2$.Let the oxidation number of phosphorus be $x$.The oxidation number of calcium $(Ca)$

Vedclass · Accepted Answer

$5$

Vedclass · Answer

(C) The chemical formula for calcium phosphate is $Ca_3(PO_4)_2$.Let the oxidation number of phosphorus be $x$.The oxidation number of calcium $(Ca)$ is $+2$ and oxygen $(O)$ is $-2$.For the neutral compound $Ca_3(PO_4)_2$,the sum of oxidation numbers must be zero:$3(+2) + 2[x + 4(-2)] = 0$$6 + 2[x - 8] = 0$$6 + 2x - 16 = 0$$2x - 10 = 0$$2x = 10$$x = +5$Therefore,the oxidation number of phosphorus is $+5$.

What is the oxidation number of phosphorus in calcium phosphate?

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