Question

find the oxidation number for the following

Answer 1

hope this answer may help you

Answer 2

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HERE'S THE ANSWER...

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♠️ First I'll write the charge on each element , used in this question

=> K = + 1

=> O = - 2

=> Na = + 1

=> SO4 = - 2

✔️ $\underline{K MnO_{4}}$

=> Total charge = 0

=> + 1 + x - 2 ( 4 ) = 0

=> x + 1 - 8 = 0

=> $\boxed{ x\:=\:+7}$

✔️$\underline{Na_{2}Cr_{2}O_{7}}$

=> Total charge = 0

=> + 1 ( 2 ) + 2 x - 2 ( 7 ) = 0

=> 2 + 2 x - 14 = 0

=> - 12 + 2 x = 0

=> $\boxed{x\:=\: +6}$

✔️$\underline{CuSO_{4}}$

=> Total charge = 0

=> x + - 2 = 0

=> $\boxed{x\:=\:+2}$

✔️$\underline{FeO}$

=> Total charge = 0

=> x - 2 = 0

=> $\boxed{x\:=\:+2}$

HOPE HELPED

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