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What is the effect of temperature on semiconductor
Temperature effects the mobility , conductivity,intrinsic concentration and forbidden energy gap of a semiconductor. Effect of temperature on semiconductor is given below : Mobility (µ) : The mobility means the movement of charge carriers. The mobility of intrinsic semiconductor decreases…
Read More »What do you mean by Valence Electrons and Free Electrons ?
Valence electrons are the electrons in the outermost shell of an atom( in valance band ). These electrons are weakly bound to the nucleus. These electrons are bounded to atom so that it can only be moved within valance…
Read More »Describe the Energy of an Electron
An electron moving round the nucleus possesses two types of energies viz kinetic energy due to its motion and potential energy due to the change on nucleus .The total energy of the electron is the sum of these…
Read More »Differences Between Crystalline and Amorphous Solid
The main differences Between Crystalline and Amorphous Solids are given below : Crystalline Solids Amorphous Solids 1.Crystalline Solids have characteristic geometrical shape. 1.Ireular pattern of ions , molecules or atoms in a solid. 2.They have highly ordered three…
Read More »Structure of a Silicon Atom
Silicon is a chemical element with symbol Si and atomic number 14.The electron configuration of silicon is 1s2 2s2 2p6 3s2 3p2 ( Noble Gas notation : [Ne] 3s23p2 ) The average silicon atom has fourteen protons, fourteen electrons, and…
Read More »Explain electronic configuration of electrons
The electron configuration of each element is unique to its position on the periodic table.The energy level is determined by the period and the number of electrons is given by the atomic number of the element. Orbitals on different…
Read More »Write the limitation of Rutherford atomic model?
The limitations of Rutherford atomic model : 1. Inability to explain the stability of atom An atom consists of a small , heavy positively charged nucleus in the center and the electrons were moving around it. The model…
Read More »What is a Rutherford Model of Atom? Planetary model of the atom? Solar Model ?
A British Physicist “Ernest Rutherford” proposed a model of the atomic structure known as Rutherford’s Model of Atoms. It is also called nuclear atom or planetary model of the atom. Rutherford’s Model of Atoms Rutherford proposed that an atom is composed of empty space mostly…
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