Question

What is the oxidation state of Al in Al2O3?

Answer 1

here... Al is in +3 state.......

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Answer 2

so let oxidation no.of Al be x and as overall charge on compound is zero 

so 2x + 3 X -2 = 0 

2x - 6 = 0 

2x = 6 

x = 6/2 = 3