The Neutron and Periodicity of Properties

At the end of this lesson you should be able to:

• Associate the atomic number of an element with the number of protons it has
• Describe the position and electrical charge of the neutron in an atom
• Represent an atom of a given element using the simplified atomic model
• Describe the periodicity of certain properties of elements (e.g. chemical reactivity, atomic radius, electronegativity)