Boron and BF3 Valence Electrons

The video explains the Lewis structure of Boron trifluoride (BF3). It details the valence electrons of Boron and Fluorine, and how they are used to form the structure. Boron is placed in the center due to its lower electronegativity, with Fluorines around it. The video discusses the use of valence electrons to form bonds and satisfy the octet rule, noting that Boron is an exception with only six valence electrons. It concludes with an explanation of formal charges, confirming the plausibility of the BF3 structure.

How many valence electrons does Boron have in the BF3 molecule?

• 8

• 7

• 5

• 3

What is the total number of valence electrons in the BF3 Lewis structure?

• 18

• 27

• 24

• 21

Where is Boron placed in the BF3 Lewis structure?

• On the left

• In the center

• On the right

• At the top

How many valence electrons are used to form chemical bonds between Boron and Fluorine in BF3?

• 6

• 4

• 8

• 2

Why is Boron an exception to the octet rule in BF3?

• It can have more than 8 electrons

• It can be stable with only 6 electrons

• It does not form bonds

• It shares electrons with other molecules

What are the formal charges on Boron and Fluorine in the BF3 Lewis structure?

• +2

• +1

• -1

• 0