IB Chemistry > Atomic theory (hl) > Atomic orbitals 

These notes were written for the old IB syllabus (2009). The new IB syllabus for first examinations 2016 can be accessed by clicking the link below.

IB syllabus for first examinations 2016

12.2 - Atomic orbitals

s,p,d,f orbitals are the regions of space in which electrons may be found - 99% probability
( higher level students need to know the shapes of s and p only)



  Electronic structure
energy shells- 1, 2, 3, 4, 5 etc.
sub-shells- s, p, d, f
orbitals- s has 1
p has 3
d has 5
f has 7
electron pairs- each orbital holds two electrons
click on the shockwave demonstration to see all the orbitals demonstrated



A full set of pictures of all the orbitals as produced by solving the Schröedinger equation (not needed for the IB but interesting nevertheless)