Ionic Compounds and Electron Transfer

The video tutorial explains how to draw the Lewis structure for barium oxide (BaO). It describes the nature of ionic compounds, where valence electrons are transferred from a metal to a non-metal. Barium, a metal, transfers its two valence electrons to oxygen, a non-metal, resulting in a stable octet for oxygen and a 2+ charge for barium. The video also discusses the use of brackets to indicate electron transfer and differentiate from covalent bonding.

What type of compound is formed between barium and oxygen?

• Ionic

• Polar

• Covalent

• Metallic

How many valence electrons does barium have?

• 1

• 2

• 4

• 6

In which group is oxygen found on the periodic table?

• Group 2

• Group 18

• Group 8

• Group 16

What happens to barium's electrons in the formation of barium oxide?

• They are shared with oxygen.

• They are transferred to oxygen.

• They remain with barium.

• They are lost to the environment.

What charge does barium have after losing its electrons?

• 2+

• 1-

• 2-

• 1+

What is the resulting charge on oxygen after gaining electrons?

• 2-

• 1+

• 1-

• 2+

Why are brackets used in the Lewis structure of barium oxide?

• To separate the elements.

• To show shared electrons.

• To indicate electron transfer.

• To highlight covalent bonds.

What distinguishes ionic bonds from covalent bonds in terms of electron behavior?

• Electrons are transferred in ionic bonds.

• Electrons are transferred in covalent bonds.

• Electrons are lost in covalent bonds.

• Electrons are shared in ionic bonds.