You may find the following URL useful for obtaining properties for Silicon. http://www.shef.ac.uk/chemistry/web-elements/Si/key.html Good luck ! Kirthi Roberts -- Kirthi Roberts | e-mail : kroberts@sfu.ca | School of Engineering Science | Tel : (604) 291-3815 | SFU, Vancouver, Canada | FAX : (604) 291-4951 |