Electron+deficient+molecules

=Electron Deficient Molecules= An electron deficient molecule is an exception to the octet rule. These molecules have less than 8 electrons surrounding the elements. This is a fairly rare situation but can be most commonly found in Boron and Beryllium.
 * By: Anne Smolko**

Boron compounds
- It has an empty P-orbital Boron trifluoride This compound is a colorless gas with a penetrating odor. It is highly toxic. Boron only has six electrons because it gave two to the fluoride atom. This molecule is very reactive with molecules having an unshared pair of electrons

This is correct This is incorrect

Beryllium compounds
Beryllium only has 4 valence electrons in Beryllium chloride



http://en.wikipedia.org/wiki/Boron __Chemistry The Central Science [|http://images.google.com/imgres?imgurl=http://www.chemguide.co.uk/inorganic/group2/becl2gas.gif&imgrefurl] [|http://www.xmission.com/~seldom74/chem1110int/ch05/lewis-structures-BF3.gif__]