Chemical Bonding - Covalent Non-Metals: Lewis Structure - Covalent Compound

Question 1

steps for drawing lewis structures

Answer 1

• 1. least electromotive atom is in center
• 2. hydrogen cannot be central atom
• 3. determine shared electrons and number of bonds (shared=need-available, S=N-A)
• 4. arrange remainder of electrons to fill octets

Question 2

HCl

Answer 2

• hydrogen has 1e- needs 2
• chlorine has 7e- needs 8
• S = N-A
  = S = 10-8
• S= 2/2 = 1 bond

Question 3

NF3

Answer 3

• flourines have 7e- x3 = 21 needs 8 x 3 = 24
• nitrogen has 5e- needs 8
• S=N-A
• S= 32-26
  S = 6/2 = 3 bonds