Fill in the missing information on the chart. Element
# of Protons
# of Electrons
# of Valence Electrons
Sodium

Chlorine

Beryllium

Fluorine

Lithium

Oxygen

Phosphorus

2. For each of the following ionic bonds:
Write the symbols for each element.
Draw a Lewis Dot structure for the valence shell of each element.
Draw an arrow (or more if needed) to show the transfer of electrons to the new element.
Write the resulting chemical formula.

a) Sodium + Chlorine

b) Magnesium + Iodine

c) Sodium + Oxygen

d) Calcium + Chlorine

e) Aluminum + Chlorine
Covalent Bond Practice

1. Fill in the missing information on the chart.
Element
# of Protons
# of Electrons
# of Valence Electrons
# of electrons to fill outer shell.
Carbon

Hydrogen

Chlorine

Helium

Phosphorus

Oxygen

Sulfur

Nitrogen

2. For each of the following covalent bonds:
Write the symbols for each element.
Write the chemical formula for each molecule.

a) Hydrogen + Hydrogen

b) Chlorine + Chlorine

c) Hydrogen + Chlorine

d) Hydrogen + Oxygen

e) Nitrogen + Hydrogen

f) Carbon + Hydrogen