Valence and Oxidation Numbers

What element's don't have oxidation numbers?

• alkali metals
• noble gases
• halogens
• alkaline earth metals

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

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

What is the oxidation number of Magnesium (Mg)?

• +2
• -2
• whats an oxidation number

What is the oxidation number for Flourine (F)?

• +1 
• -1
• 17
• 7

Which of the following elements does NOT have an oxidation number of +2?

• Ca
• Sr
• K
• Ba

What element always has an oxidation number of +1?

• Hydrogen
• Fluorine
• Chlorine
• Iodine

What is the oxidation number for Be? 

• +1
• +2
• +3
• +4

What is oxidation number of Ca in CaCl₂ ?

• -1
• -2
• +1
• +2

What is oxidation number of Na in Na⁺ ?

• 0
• +1/2
• +1
• -1

What is oxidation number of Mn in MnO₂ ?

• 0
• +2
• -2
• +4