Chemical bonding and Lewis Structures

Question 1

Ionic Bond

Answer 1

Force existing between ions of opposite charge, transfer of e-

Ex: Na+ + Cl- = NaCl

Question 2

Ionic compounds are stable

Answer 2

Attraction of opposite charges draws ions together releasing energy upon bond formation and results in a solid lattice

Question 3

Lattice energy

Answer 3

Energy required to completely separate a mol of an ionic substance into its gaseous ions

Question 4

Lattice energy depends on

Answer 4

1. Ion charges
2. Distance between charges

(Depends primarily on ion charges)

Lattice energy ⬆️ as ion charges ⬆️

⬆️ as distance ⬇️

Question 5

Electronegativity

Answer 5

How much as atom wants an e- when it’s bonded to something else

Question 6

Covalent bonding

Answer 6

2 nonmetals share e-

Question 7

Lewis structures

Answer 7

2-d pictures that show the sharing of e-

Question 8

Lewis structure rules for drawing

Answer 8

1. Count total valence e-
2. Arrange atoms
   a. If 2 atoms, place side by side
   b. If c, goes in center
   c. The least electronegative atom in center
3. Add in valence e- on atoms
4. Form bond (2 e-)
5. Count and check 1. Octet rule 2. Total Val e-

Hydrogen NEVER in center