bonding differences of metals and nonmetals

Physical Properties - Differences in physical properties Metals Non-metals Malleable and ductile. Brittle. Neither malleable nor ductile. Good conductors of heat and elecu.ity. except tungsten which is not a good conductor of electricity)..

. Bronze was widely used for many years and this epoch of prehistory became Bronze Age. They indicate a gradual change in the life style of mankind. About 7000 years ago it was discovered that certain minerals would yield metals when placed in the fire. Many of these colored minerals were..

. These developments indicate a gradual change in the life style of mankind. Today metals are so vital to the modern man that it is unthinkable to live without them. They are essential for the construction of houses, transportation, communication, electricity, household articles, scientif..

Electronic Nature of Metals and Non-metals - We are familiar with the fact that the atoms of all elements, except noble gases, have an incomplete outermost shell. Consequently, most elements are reactive and they try to achieve the stability of the noble or inert gases by electr..

Ionic Bond Covalent Bond Metallic Bond The transfer of electrons between two atoms having different electro negativities forms this bond. This bond is formed by the mutual sharing of electrons between same or ..

. The atom of metallic elements contain only 1 to 3 valence electrons, therefore these atoms cannot form covalent bonds, with noble gas configurations as they will remain incomplete. Covalent compounds are bad conductors of electricity and are generally liquids; properties oppos..

fig 1.21 - Formation of energy band in sodium metal The figure1.21 shows how the molecular orbital energy level diagram changes as the number of atoms in the crystal increases. With increase in number of atoms, the number of energy levels increases and the energy spacing between them decr..

The progress of the civilization was first benchmarked by man's increasing knowledge and usage of metallic deposits in the earth's crust. Early man used stones, bones and wood to fulfill their requirements of hunting, cooking and buildin..

..

..