Valence Electrons and Water Structure

Dr. B explains how to draw the Lewis structure for water (H2O). The video covers the calculation of valence electrons for hydrogen and oxygen, placing electrons to form chemical bonds, and ensuring that each atom has a full outer shell. The video concludes with a review of the completed Lewis structure, highlighting that hydrogen has two valence electrons and oxygen has an octet.

How many valence electrons does a single hydrogen atom have?

• 1

• 2

• 6

• 8

What is the total number of valence electrons in a water molecule?

• 6

• 8

• 12

• 10

Where is the oxygen atom placed in the Lewis structure of water?

• Next to one hydrogen

• In the center

• Above the hydrogens

• On the outside

How many valence electrons does each hydrogen atom need to have a full outer shell?

• 1

• 2

• 4

• 8

What rule is satisfied when the oxygen atom in water has eight valence electrons?

• Octet rule

• Triple bond rule

• Duet rule

• Valence rule