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Solid state and types of solids

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saranyaHC1

This document discusses the classification and properties of solid materials. It describes crystalline solids as having a highly ordered microscopic structure forming a crystal lattice, while amorphous solids lack a definite pattern. Crystalline solids form through close packing of particles to reach maximum density. Close packing can be square or hexagonal, with hexagonal having a coordination number of 6. Interstitial voids are the empty spaces left in close packed structures. Solids also exhibit magnetic properties and are classified as diamagnetic if weakly repelled by magnetic fields or paramagnetic if weakly attracted with unpaired electrons.

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SOLID STATE SARANYA H C KEYI SAHIB TRAINING COLLEGE
CLASSIFICATION CRYSTALLINE SOLIDS AMORPHOUS SOLIDS
CRYSTALLINE SOLIDS A crystalline solid is a solid material whose constituents are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.
AMORPHOUS SOLIDS An amorphous solid is any noncrystalline An amorphoussolid is a material in which the atoms and molecules are not organized in a definite lattice pattern. Such solids include glass, plastic, and gel.
CLOSE PACKING IN CRYSTALLINE SOLIDS The packing of constituent particles during the formation of a crystal takesplace in such a way that the available space is used most economically and a state of maximum possible density is reached. This type of packing is called close packing
TWO DIAMENSIONAL CLOSE PACKING SQUARE CLOSE PACKING HEXAGONAL CLOSE PACKING
SQUARE CLOSE PACKING ? In this arrangement the particles in the adjacent rows show horizontal as well as vertical arrangement in the plane ? Each central sphere is in contact with 4 other spheres
HEXAGONAL CLOSE PACKING ? In this arrangement particles of the second row are placed in the depressions between particles of first row. ? Each particle is in contact with six other particles which are arranged hexagonally around it.
THREE DIAMENSIONAL CLOSE PACKING HEXAGONAL CLOSE PACKING CUBIC CLOSE PACKING
CO-ORDINATION NUMBER In any crystal lattice, the number of nearest neighbours with which a given particle is in contact is called the co-ordination number CN=6
INTERSTITIAL VOIDS The vacant sites or empty space in close packed structures are called interstitial voids
MAGNETIC PROPERTIES OF SOLIDS Classified into mainly into two ? ?
DIAMAGNETIC SUBSTANCES ? Weakly repelled by the magnetic field ? Electrones paired
PARAMAGNETIC SUBSTANCES ? Weakly attracted by the magnetic field ? Contain unpaired electrones
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Solid state and types of solids