Examples: Ions and Atomic Symbol

Notation

Example

• Determine the charge of the following ion. • Chlorine gains one electron.

Example

• Determine the oxidation number of the following ion. • Magnesium loses two electrons.

Example

• How many electrons are in:• Aluminum with a +3 oxidation number

Example

• How many electrons are in:• Sulfur-32 with an oxidation number of -2

You Try• Determine the oxidation number of the

following ions. • Fluorine gains one electron. • • How many electrons are in:• Iron-56 with a +3 charge.

Example• Write the following in atomic symbol notation• Oxygen with 7 neutrons and 8 protons

Example• Write the following in atomic symbol notation• An element with 10 protons and 11 neutrons

Example• Write the following in atomic symbol notation • Chlorine with 16 neutrons and 18 electrons

Example• Write the following in atomic symbol notation• An element with 1 proton, 1 neutron, and 0

electrons

You Try• Write the following in atomic symbol notation• Lead with 125 neutrons• • • An element with 25 protons, 30 neutrons, and

23 electrons. • • • Neon with 10 neutrons• • • An element with 19 protons and 20 neutrons