Atomic Models

Question 1

Schrodinger’s model

Answer 1

Electrons occupy 3D space around an atom. The space they occupy is known as an orbital. Shells are the major energy levels. Each shell contains subshells, which are smaller energy levels, and subshells contain orbitals

Question 2

Pauli Exclusion Principle

Answer 2

Each orbital can contain a maximum of 2 electrons. Each electron has a different spin

Question 3

Aufbau Principle

Answer 3

Lowest energy orbitals are always filled first

Question 4

Hund’s Rule

Answer 4

Every orbital in a subshell has to be filled with one electron with the same spin before an orbital is filled with a second electron

Question 5

Bohr Model

Answer 5

Electrons occupy discrete energy levels and can jump between these levels. Spectral lines can be observed when electrons move between levels, emitting or absorbing energy