Quantum Theory & the Atom

excited state

quantum state

ground state

atomic orbital

Planck’s effect

de Broglie principle

Heisenberg uncertainty principle 

Schrodinger principle

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Bohr’s model

Heisenberg’s model

particle mechanical model

quantum mechanical model of the atom

It is impossible to assign fixed paths for electrons.  

It is impossible to know precisely both the velocity and the position of a particle at the same time. 

It is possible to know the probability for an electron to occupy a certain region around the nucleus. 

It is possible to know precisely both the velocity and the position of a particle at the same time. 

de Broglie

Heisenberg

Schrödinger

Bohr

There are only two types of atomic orbitals: s and p.

Each orbital can hold a maximum of two electrons with opposite spins.

All orbitals in the same energy level have the same shape.

Orbitals are fixed paths around the nucleus.

Bohr

Planck

Schrödinger

Rutherford

Heisenberg

Planck

Bohr

de Broglie

Heisenberg

Bohr

Planck

Schrödinger