The cubic system
All planes of the cubic system are
perpendicular and equidistance
from each other
A cube has:
There are 3 types of unit cell:
Fig 12.27 p
The effect of pressure and temperature on physical state of a compound can be presented in a phase diagram.
It is important to know that the diagrams are not drawn to scale.
Phase diagram of H2O
Phase diagram of CO2
Fig 12.10, p466
The bond order =
The electron configuration is (1s)2 (*1s)2 (2s)2
Formation of Be2
Is it possible to form Be2?
We dont have Be2 because bond order will be equal to zero
Molecular orbitals for p orbitals
Since there are three 2p orbitals, we can ex