Oxidation Numbers in Compounds

The video tutorial explains how to determine the oxidation numbers for elements in sodium hydride (NaH) using general rules and the periodic table. Sodium, being in group one, has a +1 oxidation number, while hydrogen, when bonded to a metal like sodium, has a -1 oxidation number. The tutorial also covers the concept of neutral compounds, where the sum of oxidation numbers equals zero, and provides a method to verify these numbers.

What is the oxidation number of sodium in sodium hydride (NaH)?

• +1

• -1

• +2

• 0

When hydrogen is bonded to a metal like sodium, what is its oxidation number?

• 0

• -1

• +2

• +1

What is the oxidation number of hydrogen in NaH?

• 0

• +2

• -1

• +1

In a neutral compound, what should the sum of all oxidation numbers be?

• +1

• -1

• 0

• +2

Which rule helps verify the oxidation numbers in a compound?

• The sum of oxidation numbers equals the charge of the compound

• Hydrogen always has a +1 oxidation number

• The sum of oxidation numbers equals +2

• Sodium always has a -1 oxidation number