For the chemistry course, I edited these periodic tables using illustrator to demonstrate how to find the ionic charges of elements.

Thank you Wayne Breslyn, these tables were based from your tables.

https://terpconnect.umd.edu/~wbreslyn/chemistry/naming/findingioniccharge.html

View larger image here: https://dnaatwork.files.wordpress.com/2017/02/ptable-charges-trend-meth-1-01.png

View larger images here: https://dnaatwork.files.wordpress.com/2017/02/ptable-charges-trends-2-01.png