Quantum mechanics and electron notation

Aufbau principle

Electrons are added to orbitals in order of low energy to high energy

Pauli exclusion principle

Orbitals can hold a maximum of 2 electrons each with opposite spins

Hunds rule

Maximize unpaired electrons in orbitals with the same energy of a sublevel

Heisenberg Uncertainty principle

It is impossible to know that location of and velocity of an electron simultaneously

Quantum theory

The quantum theory describes mathematically the wave properties of an electron and other small particles

What did Debrogile propose

That if light can behave as both a wave and a particle then particles like electrons can behave as a wave.

Who coined quantum mechanics and what does it mean?

Schrodinger, quantum mechanics describes the electron in terms of quantized energy changes