Barium Hydride and Oxidation Numbers

This video tutorial explains how to determine the oxidation numbers for each element in barium hydride (BaH2). It begins by introducing the concept of oxidation numbers and explains that BaH2 is a neutral compound, meaning the sum of its oxidation numbers is zero. The video details that barium, being in group two of the periodic table, has a +2 oxidation number. It further explains that hydrogen, when bonded to metals like barium, has an oxidation number of -1. The tutorial concludes by summarizing how these oxidation numbers add up to zero, reinforcing the concept of neutrality in compounds.

What is the overall charge of barium hydride?

• Variable

• Neutral

• Negative

• Positive

Which group in the periodic table does barium belong to?

• Group 2

• Group 3

• Group 4

• Group 1

What is the oxidation number of barium in barium hydride?

• -1

• +2

• +1

• 0

When hydrogen is bonded to metals like barium, what is its oxidation number?

• +2

• +1

• -1

• 0

How do the oxidation numbers in barium hydride add up?

• They add up to +1

• They add up to -1

• They add up to zero

• They add up to +2