oxidation number

What is the oxidation number of Fe in FeO?

• +1
• -1
• +2
• -2

Tags

NGSS.HS-PS1-2

The sum of all oxidation numbers in a neutral compound is ___.

• 0
• 1
• -1
• depends on the compound

What is oxidation number of Cr in
Cr₂O₇^2-?

• -2
• +2
• +6
• +12

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

What are oxidation numbers?

• Number of electrons in the outer most energy level
• Number of protons
• Electrons gained or lost in chemical bonding
• Number of neutrons gained or lost

Tags

NGSS.HS-PS1-2

Oxidation number of O in its stable elemental form, O₂:

• 0

• -1

• -2

• +2

Oxidation number of Fe in Fe²⁺ ion:

• 0

• -2

• +2

• +3

Tags

NGSS.HS-PS1-2

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

• -2

• +2

• -3

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

What is the oxidation state of Cl in ClO^- ?

• 0

• +1

• -1

• +2

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

C in CO₃^2-?

• -4

• +2

• 0

• +4

Tags

NGSS.HS-PS1-2

Determine the oxidation numbers and Valence Electrons for Br.

• -1, 7
• +3, 2
• -1, 3
• +7, 3

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1