Beryllium and Lewis Structures

Dr. B explains how to draw the Lewis structure for BeH2. Beryllium has 2 valence electrons and each Hydrogen has 1, totaling 4 valence electrons. Beryllium is placed in the center with Hydrogens on the outside. Two electrons are used to form bonds between Beryllium and each Hydrogen. Beryllium is an exception and does not need 8 valence electrons. The video concludes with a completed Lewis structure for BeH2.

How many valence electrons does Beryllium have?

• 1

• 4

• 2

• 3

What is the total number of valence electrons in BeH2?

• 5

• 4

• 3

• 2

Where are the Hydrogen atoms placed in the Lewis structure of BeH2?

• Below

• Inside

• Above

• Outside

How many electrons are used to form chemical bonds in BeH2?

• 1

• 4

• 2

• 3

Why is Beryllium an exception to the octet rule?

• It needs 10 electrons

• It doesn't need 8 electrons

• It needs 6 electrons

• It needs 8 electrons