How many different outfits can you make with what you have in your closet? The Fundamental Counting Principle can help you find an answer! Learners find totals using the Fundamental Counting Principle with problems that can have...

A comprehensive guide for learning all about the fundamental counting principle with definitions, determining sample space, solved examples, and practice questions.

A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...

Have you ever wondered about the purpose of such small words as a, this, the and the like? These words are articles, determiners and quantifiers that precede and modify nouns.

An explanation of the different types of atomic orbitals, how they are filled according to the Pauli Exclusion Principle, and how many electrons can fit in each electron shell.