Question

Find oxidation number of Al in Na3AlF6

Answer 1

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3 + X - 6 = 0

X =3

so oxidation number is 3 for Al

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Answer 2

Oxidation number of Al in $Na3AlF6$ is +3

Explanation:

• In $Na3AlF6$ the $AlF6$ is in -3  

      Here $AlF6$ is  (-3)

• so the oxidation state of Aluminum is +3 and  Fluorine has an oxidation state (-1)

• When we substitute the contribution of Aluminum and fluorine in

       $Na3AlF6$ =0

       we get 3 + X - 6 = 0

        X =3

• so oxidation number is 3 for Al (Aluminum)

• Oxidation number may be known as oxidation state also.

• It is the number of electrons that an atom will have either gains or loses in order to form a chemical bond with another atom.

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