Noble gases: The high and mighty helium
Helium was discovered on the sun before it was found on earth. What about it as a noble gas makes it so good at hiding?
What is atomic structure?
The atom is not a featureless ball. It consists subatomic particles arranged in a mind-boggling way.
Ions & ionic bonding
The story of give and take, in terms of electrons
Covalent bond in molecules
Share share our electron pair