Oxidation Numbers of Lithium and Chlorine

This video tutorial explains the concept of oxidation numbers, focusing on lithium. It begins by discussing lithium as a free element with an oxidation number of zero. The video then explores how lithium's oxidation number changes when it bonds with chlorine, becoming +1, while chlorine becomes -1. The tutorial emphasizes the role of electronegativity in determining oxidation numbers and concludes by summarizing the oxidation states of lithium in different contexts.

What is the oxidation number of a free element like lithium?

• Zero

• Plus one

• Plus two

• Minus one

Why does lithium have an oxidation number of zero when it is a free element?

• Because it is neutral with no charge

• Because it is highly reactive

• Because it is bonded to other elements

• Because it is in group two

What happens to lithium's oxidation number when it bonds with chlorine?

• It remains zero

• It becomes positive

• It becomes neutral

• It becomes negative

Which element is more electronegative in a lithium-chlorine bond?

• Both are equally electronegative

• Chlorine

• Neither is electronegative

• Lithium

What is the typical oxidation number of lithium when it is in a compound?

• Zero

• Plus two

• Minus one

• Plus one

In a compound, what oxidation number does chlorine typically have?

• Minus one

• Plus one

• Zero

• Plus two

What is the oxidation number of two chlorine atoms bonded together?

• Plus two

• Zero

• Plus one

• Minus one

What is the oxidation number of lithium when it is not bonded to any other element?

• Plus two

• Minus one

• Plus one

• Zero

What is the oxidation number of lithium when it is bonded to another element?

• Zero

• Plus one

• Minus one

• Plus two