Oxidation Numbers (ONs)

What is the oxidation number of Fe in FeO?

• +1
• -1
• +2
• -2

What is the oxidation state of S in SO₃ ?

• -3

• -2

• +4

• +6

What is the oxidation state of N in NO₂^- ?

• +2

• +3

• -1

• -4

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the oxidation number of O in Li₂O ?

• -1

• -2

• +1

• +2

Determine the oxidation number of the red underlined element.

NaCl

• +1

• -1

• -2

• 0

Determine the oxidation number of the red underlined element.

NaClO₄

• +7

• -1

• +6

• 0

Determine the oxidation number of the red underlined element.

CaN₂

• +1

• -3

• -1

• 0

For any neutral compound, the sum of the oxidation numbers of the atoms in the compound must equal ..........

• -1

• +2

• 0

What is the charge, or oxidation number, for elements in Group 17?

• + 1

• -7

• -1

What is the charge, or oxidation number, for elements in Group 2?

• -2

• +2

• -3