This lesson will illustrate that an atom is mostly empty space and has a positively charged, massive core (containing both protons and neutrons called the nucleus) surrounded by negatively charged electrons. It is 1 of 3 in the series...

This lesson will explore bent shaped molecules including bond angles. It is 2 of 2 in the series titled "VSEPR: Bent Molecules."

This lesson will explain how to identify the number of shared pairs and unshared pairs of electrons surrounding the central atom using Lewis dot diagrams. It is 2 of 2 in the series titled "VSEPR: Electron Pairs."

This lesson will explore tetrahedral shaped molecules. It is 1 of 2 in the series titled "VSEPR: Tetrahedral Molecules."

This lesson will explore trigonal planar molecules. It is 2 of 2 in the series titled "VSEPR: Trigonal Planar Molecules."

This lesson will explore trigonal planar molecules. It is 1 of 2 in the series titled "VSEPR: Trigonal Planar Molecules."

This lesson explains JJ Thomson's experiments that led to the discovery of the electron. It is 3 of 3 in the series titled "JJ Thomson."

This lesson will explore tetrahedral shaped molecules. It is 2 of 2 in the series titled "VSEPR: Tetrahedral Molecules."

This lesson will explore trigonal pyramidal shaped molecules. It is 2 of 2 in the series titled "VSEPR: Trigonal Pyramidal Molecules."

Quicktime movies of atomic orbitals.