What is the oxidation number of O in CO2?

+4

Oxidation number of carbon in CO2 is :

Let x be the oxidation state of C in CO2. Since, the overall charge on the complex is 0, the sum of oxidation states of all elements in it should be equal to 0. Hence, the oxidation state of C in CO2 is +4

Step-by-step explanation:

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circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: