covalent bondingexhibited through the diamond
Covalent Bonding
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impurities in semiconductorscan be added in accurately controlled amountscan modify the electronic and optical propertiesused to change conductivity
bonding forces and energy bands in solids electrons are controlled to sets of discrete energy levels in atoms with large gaps among them in which no
ionic bondinginstance naclna z 11 gives up the outermost shell electron of it to cl z17 atom so the crystal is build up of ions with the electronic
metallic bondingin metals the outer shell is filled through no more than three electrons loosely bound and given up easily gt great chemical activity
covalent bondingexhibited through the diamond lattice semiconductorseach atom enclosed by four nearest neighbors each comprising four electrons in
mixed bondingdisplayed by iii-v compounds bonding partly ionic and partly covalentionic character of bonding becomes much more prominent since the
metals semiconductors and insulators for electrons to move within an applied electric field there have to be states available to them a totally
charge carriers in semiconductors in a metal the atoms are imbedded in a sea of free electrons and these electrons can move as a group under the
effective massthe electrons wave-particle motion in a lattice is not the same as that for a free electron because of the interaction with the
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