8.5-8.6

Question 1

What is the first step (N) in creating a Lewis dot structure?

Answer 1

N: Determine the number of valence electrons needed by the bonding atoms in a covalent molecule. Hydrogen and fluorine only need 2.

Question 2

What is the second step (A) in making a Lewist dot diagram?

Answer 2

A: Find the total number of valence electrons available from the molecule. Add up the valence electrons of each atom in the molecule.

Question 3

What is the third step (S) in making a Lewis dot diagram?

Answer 3

S: Find the number of electrons shared by atoms by subtracting the available valence electrons from the electrons needed.

S = N-A

Question 4

How do you find the number of bonding pairs of electrons in a Lewis dot structure?

Answer 4

BP: Number if shared electrons divided by 2.

BP=S/2

Question 5

How do you find the number of lone pairs in a molecule?

Answer 5

Take the number of available electrons and subtract the number of shared electrons, then divide by 2.

LP: (A-S)/2