Lesson 2.5: The trends of periodic table

Learning Goals:

By the end of this lesson, I will be able to:

• explain the trends of the periodic tables including:

  • atomic size/ atomic radius

  • ionization energy

  • electron affinity

  • electronegativity

*The learning goals descriptions are taken and reworded/simplified from Ontario Curriculum booklet. Codes inside the brackets refer to the sections of Ontario Curriculum for Science Course.

Success Criteria:

1. I can explain the trends of the periodic table across a period and down a group including:

   • Atomic radius

   • Electron affinity

   • Electronegativity

   • Ionization energy

Time: 2 Hours