Page 139 - MATERIAL SCIENCE AND ENGINEERING PART 1

Why do metallic compounds have a

high melting/boiling point?

Metals have high melting/boiling points

because of the strength of the metallic bond.

The strength of the metallic bond depends on

the number of electrons in the delocalised

'cloud of electrons'.

(More delocalised electrons result in a

stronger bond and a higher melting point) and

packing arrangement of the metal atoms. (The

more closely packed the atoms are, the

stronger the bond is and the higher the

melting point.)

124

Politeknik Ibrahim Sultan