Atomic structure

What is Heisenberg’s uncertainty principle?

It is impossible to simultaneously know the exact position and speed of an electron

Scrondinger’s wave equation

An equation that can calculate the energy level of an electron

How does Schrodinger describe electrons?

As a standing wave

Pauli’s exclusion principle

Each orbital can have 2 electrons with the same n,l,m values but must have opposite spin numbers (1/2 OR -1/2)

VESPR theory

Method to predict the 3D structure around the atom (the structure of the compound)

Sigma bond

When the tips of 2 orbitals directly overlap

Pi bonds

When two orbitals overlap side by side

True or false: the weaker the intermolecular forces the higher the melting and boiling points

False, the stronger the intermolecular forces the higher the melting and boiling points

True or false: london dispersion force is a weak attractive force between two non polar molecules

True

True or false: hydrogen bonds are the strongest bonds

True

A EN<0.5 = _________

non polar

a EN > 0.5 = ______

Polar

Aufbau"‘s principle

Electrons fill the lowest energy levels first.

Hans rule

Electrons fill each orbital singly before pairing up.