Sodium Chlorine P P N N Sodium Chlorine

Sodium Chlorine

P P N N Sodium Chlorine Electron configuration

P Sodium Electrons Protons P Chlorine

P Sodium P Chlorine Electrons Protons Charge

I wish my outside shell was full I wish my outside shell was empty P 11 P 17 Chlorine Chloride Atom Ion Sodium Ion Atom Electrons 11 10 Electrons 17 18 Protons 11 Protons 17 Charge 0 +1 Charge 0 -1

P 11 Sodium Ion Atom Electrons 11 10 Protons 11 Charge 0 +1

Na Sodium Atom Na+ + Sodium Ion Electrons 11 10 Protons 11 Charge 0 +1 e-

P 17 Chlorine Chloride Atom Ion Electrons 17 18 Protons 17 Charge 0 -1

Cl + e- Chlorine Atom Cl- Chloride ion Electrons 17 18 Protons 17 Charge 0 -1

Na+ e- Oxidation Na Na+ + e-

e- Cl - Reduction Cl + e- Cl-

O x i d a t i o I s L o s s R e d u c t i o n I s s n -3 -2 -1 0 1 Reduction 2 3 on r t c le e of Oxidation Charges G a i n 4 5

. . “LEO says GER!” Lose Electrons Oxidation Gain Electrons Reduction

P 11 P 17 Chlorine Chloride Atom Ion Sodium Ion Atom Electrons 11 10 Electrons 17 18 Protons 11 Protons 17 Charge 0 +1 Charge 0 -1

Na Na+ Oxidation Charges -3 -2 -1 0 Reduction Cl- Cl 1 2 3 4 5

Na + Cl Na+ + Cl- 2 Na + Cl 2 2 Na+ + 2 Cl 2 Na+ + 2 e. Cl 2 + 2 e- 2 Cl-

Decide in each case if the element undergoes oxidation or reduction + Na Mg Mg+2 S S-2 F 2 2 F-1 -2 O 2 2 O

Insert the missing electrons into the following ½ equation Ca Ca+2 Step 1 Assign total ionic charge to both sides Ca 0 Ca+2 +2 Step 2 Add e- to most positive side Ca 0 Ca+2 + 2 e+2 + -2 Step 3 check both sides balance

Insert the missing electrons into the following ½ equation Cl 2 2 Cl. Step 1 Cl 2 2 Cl 0 -2 Step 2 Cl 2 + 2 e- 2 Cl-2 -2 Step 3 Check.

Insert the missing electrons into each of the half equations below Na Na+ +2 Mg -2 S S F 2 2 F-1 O 2 2 O-2