Assign oxidation numbers to each element in the following ions. Part A Cr(OH)?4

Question

Assign oxidation numbers to each element in the following ions.

Part A

Cr(OH)?4

oxidation number for Cr:

Part B

oxidation number for O:

Part C

oxidation number for H:

Part D

S2O2?3

oxidation number for S:

Part E

oxidation number for O:

Part F

NO?3

oxidation number for N:

Part G

oxidation number for O:

Part H

MnO2?4

oxidation number for Mn:

Part I

oxidation number for O:

Part J

HPO2?4

oxidation number for H:

Part K

oxidation number for P:

Part L

oxidation number for O:

Part M

V2O4?7

oxidation number for V:

Part N

oxidation number for O:

Explanation / Answer

Part A

Cr(OH)?4

oxidation number for Cr: +3

Part B

oxidation number for O: -2

Part C

oxidation number for H: +1

Part D

S2O2?3

oxidation number for S:+2

Part E

oxidation number for O:-2

Part F

NO?3

oxidation number for N:+5

Part G

oxidation number for O:-2

Part H

MnO2?4

oxidation number for Mn:+6

Part I

oxidation number for O:-2

Part J

HPO2?4

oxidation number for H:+1

Part K

oxidation number for P:+5

Part L

oxidation number for O:-2

Part M

V2O4?7

oxidation number for V:+5

Part N

oxidation number for O:-2

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