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Tag: Chemistry

Semiconductors

Science > Chemistry > Solid State > Semiconductors On the basis of electrical conductivity, substances can be classified into three types conductors, insulators, and semiconductors. In this article, we shall have a brief idea of semiconductors. Semiconductors are the substances whose conductivity lies between the conductors and insulators e.g. Germanium, Silicon, etc. They are covalent solids. […]

Tags Chemistry, Conduction band, Conductors, Doping, Electrical conductivity, Electrical properties, Electricity, Extrinsic Semiconductors, Insulators, Intrinsic semiconductors, Metallic bonds, N-type semiconductors, P-type semiconductors, Pure silicon crystal, Semiconductors, Solid-state, Valence band

Physical Chemistry

Electrical Properties of Solids

Post author By Hemant More
Post date February 2, 2020
1 Comment on Electrical Properties of Solids

Science > Chemistry > Solid State > Electrical Properties of Solids In the last article, we have studied the dielectric properties of solids. In this article, we shall study the electrical properties of solids. Electrical Conductivity: The electrical conductivity of solids is due to the motion of electron or positive holes. The conductivity due to the motion […]

Tags Chemistry, Conduction band, Conductors, Electrical conductivity, Electrical properties, Electricity, Insulators, Metallic bonds, Semiconductors, Solid-state, Valence band

Physical Chemistry

Dielectric Properties of Solids

Post author By Hemant More
Post date February 2, 2020
No Comments on Dielectric Properties of Solids

Science > Chemistry > Solid State > Magnetic Properties of Solids In the last article, we have studied the magnetic properties of solids. In this article, we shall study the dielectric properties of solids. Source of Dielectric Properties of Solids: In insulators, electrons in the individual atom or ion are bound to corresponding nuclei. Hence […]

Tags Antiferro electricity, Chemistry, Dielectric, Dielectric property, Ferroelectricity, Piezoelectricity, Pyroelectricity, Solid-state

Physical Chemistry

Magnetic Properties of Solids

Post author By Hemant More
Post date February 1, 2020
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Science > Chemistry > Solid State > Magnetic Properties of Solids In this article, we shall study the magnetic properties of solids, classification of solids on the basis of their magnetic properties. Every substance has some magnetic properties associated with it. The origin of these properties lies in the magnetic moments associated with the electrons. […]

Tags Antiferromagnetism, Chemistry, Diamagnetic substance, Diamagnetism, Ferrimagnetism, Ferromagnetic substance, Ferromagnetism, Guoy's method, Paramagnetic substance, Paramagnetism, Solid-state

Physical Chemistry

Radius Ratio and its Significance

Post author By Hemant More
Post date February 1, 2020
2 Comments on Radius Ratio and its Significance

Science > Chemistry > Solid State > Radius Ratio and its Significance The ratio of the radius of cations (r+) to the radius of the anion (r–) is known as the radius ratio of the ionic solid. The significance of radius ratio: It is useful in predicting the structure of ionic solids. The structure of […]

Physical Chemistry

Tetrahedral Voids and Octahedral Voids

Post author By Hemant More
Post date February 1, 2020
1 Comment on Tetrahedral Voids and Octahedral Voids

Science > Chemistry > Solid State > Tetrahedral Voids and Octahedral Voids In this article, we shall study two types of voids formed during hexagonal closed packing namely, a) Tetrahedral voids and b) octahedral voids. Let us consider a closed pack hexagonal packing in the first layer as shown. There are empty spaces between the […]

Physical Chemistry

Packing in solids

Science > Chemistry > Solid State > Packing in solids In this article, we shall study the different types of close packing of the constituent particles in solids. The Principle of Packing in Solids: In a crystal particle (atoms, molecules or ions) occupy the lattice points in the crystal lattice. These particles may be of […]

Physical Chemistry

Numerical Problems on Type of Crystal Structure

Post author By Hemant More
Post date February 1, 2020
1 Comment on Numerical Problems on Type of Crystal Structure

Science > Chemistry > Solid State > Numerical Problems on Type of Crystal Structure In this article, we shall study to solve problems to calculate the atomic radius, the distance between atoms in the unit cell and to decide the type of crystal structure. Example – 01: A naturally occurring gold crystallizes in face centred […]

Physical Chemistry

Numerical Problems on Density of Solid

Post author By Hemant More
Post date January 31, 2020
3 Comments on Numerical Problems on Density of Solid

Science > Chemistry > Solid State > Numerical Problems on Density of Solid In this article, we shall study to solve numerical problems to find the density of solid, edge length and volume of the unit cell. Example – 01: Silver crystallizes in face centred cubic structure. The edge length of a unit cell is […]

Physical Chemistry

Osmosis and Osmotic Pressure

Post author By Hemant More
Post date January 31, 2020
1 Comment on Osmosis and Osmotic Pressure

Science > Chemistry > Solutions and Their Colligative Properties > Osmosis and Osmotic Pressure In this article, we shall study the phenomenon of osmosis and osmotic pressure. Semipermeable Membrane: A semipermeable membrane is a membrane which allows the solvent molecules, but not the solute molecules through it. Examples: Cellulosde, cellulose nitrate, animal bladder. Osmosis: The spontaneous […]

Tags Abbe Nollet experiment, Chemistry, Colligative properties, Hypertonic solutions, Hypotonic solutions, Isotonic solutions, Osmosis, Osmotic pressure, Semipermeable membrane, Solutions, Van't Hoff's Avogadro's law, Van't Hoff's Boyle's law, Van't Hoff's Charle's law, Van't Hoff's general solution equation, Van't Hoff's theory of solution