Electron Arrangements printable pdf download

Electron Arrangements

Electron Configurations

• Heisenberg uncertainty principle – the principle that states that it’s impossible to know the exact velocity and position of

an electron (or any other type of particle) at the same time

• Atomic orbital – an area around the nucleus where electrons are likely to be found

• s, p, d, and f orbitals have different shape(s)

• Quantum numbers – the sets of numbers used to describe the properties

of atomic orbitals and the electrons in them

• Principle quantum number (n) – a number that denotes an

atomic orbital’s size and principle energy level

Sublevel Type

Orbital Type

Number of Orbitals per

Number of Electrons per

Sublevel

Up to 2

Up to 6

Up to 10

Up to 14

• Electron configuration – a set of numbers and letters that describe an atom’s electron arrangement

• Ground-state electron configuration – an arrangement of electrons that gives an atom the least possible energy

• Three rules govern ground-state electron configurations the Aufbau principle, the Pauli exclusion principle, and

Hund’s rule

Chemistry 3.4 – Electron Arrangements

Electron Arrangements