Oxidation Numbers and Electronegativity in ASH3

This video tutorial explains how to determine the oxidation numbers for AsH3. It begins by noting that AsH3 is a neutral compound, meaning the oxidation numbers must sum to zero. The video discusses the oxidation states of hydrogen and arsenic, highlighting that hydrogen bonded to non-metals is +1, while arsenic, being more electronegative, is assigned -3. The tutorial uses a special rule for binary compounds, where the more electronegative element takes the charge it would have as an ion. The video concludes with a calculation of the oxidation numbers, confirming that the sum is zero.

What is the overall charge of ASH3?

• Positive

• Depends on the environment

• Negative

• Neutral

When hydrogen is bonded to non-metals, what is its typical oxidation number?

• -1

• 0

• +1

• +2

Why is arsenic considered more electronegative than hydrogen in ASH3?

• Because it is more electronegative

• Because it is a metal

• Because it is a non-metal

• Because it is a metalloid

According to the special rule, what charge does arsenic take in ASH3?

• +1

• -3

• 0

• +3

What is the oxidation number of each hydrogen atom in ASH3?

• +2

• 0

• -1

• +1

How do the oxidation numbers of hydrogen and arsenic in ASH3 add up?

• They add up to 0

• They add up to -3

• They add up to +3

• They add up to +1

What is the significance of arsenic being more electronegative than hydrogen in ASH3?

• It determines the compound's color

• It affects the compound's state

• It influences the oxidation number assignment

• It changes the compound's smell