Note: These links are generally for fun and to expand what the class is discussing, but this information is not going to be used on exams. I hope to add more as the class proceeds, and especially if you send me some suggestions.
Hydrogen:
Groups 1 and 2:
d-and f-block metals:
Group 13:
Group 14:
Group 15:
Group 16:
Group 17/18:
Transition Metals:
Lanthanide / Actinides:
Solid-state and materials:
General Links:
Please let me know if you find interesting links to add!