Boron and BH4- Lewis Structure

The video tutorial explains the Lewis structure of the BH4- ion, also known as the tetrahydroborate ion. It begins by calculating the total valence electrons, placing Boron at the center with four Hydrogens around it. The tutorial demonstrates forming chemical bonds using valence electrons, ensuring each atom has a full outer shell. Finally, it highlights the importance of adding brackets to indicate the negative charge of the ion.

How many valence electrons are there in total for the BH4- ion?

• 9

• 8

• 7

• 6

Where is Boron placed in the BH4- Lewis structure?

• At the top

• On the side

• At the center

• At the bottom

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

• 2

• 1

• 3

• 4

What is the total number of valence electrons used in the BH4- Lewis structure?

• 9

• 6

• 7

• 8

What is the purpose of adding brackets around the BH4- ion in its Lewis structure?

• To highlight the central atom

• To indicate a positive charge

• To show the ion is neutral

• To denote a negative charge