neutrons, electrons, and energy levels in atoms and their location in the periodic table. Students will also explore covalent and ionic bonding.

Electronegativity, an essential characteristic of all elements in the periodic table, measures an atom's ability to attract ... theoretical or experimental bond energies for significantly ionic ...

That’s why this periodic table clock really caught our eye. [gocivici]’s idea is a simple one: light up three different elements with three different colors for hours, minutes, and seconds ...