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1).schottky defect arises due to departue of ions (both cation and anion in equal ratio) from crystal lattice leaving holes that favour conductivity. The equal no of ions depart because to maintain the electrical neutrality of crystal. It was discovered by walter.H schottky in 1930.
But in frenkel defect ions(cations) are missing from there normal lattice site and occupying an interstitial site between the lattice points. They dont depart from crystal lattice. Because no departure occure so crystal remain electrically neutral. It was discovered by Yakov frenkel in 1926.
2) schottky defect is only vacancy defect but frenkel defect is vacancy as well as interstitial defect.
3). Schottky defect decreases density and strength of the crystal. But frenkel defect doesnt affect density.
4).schottky defect is shown by the ionic solids having high coordination no and approx. same size of cation and anion(i.e r+ve/r-ve approaches to 1)
While frenkel defect is shown by the compound having low coordination no and size of anion larger than cation(i.e r+ve/r-ve approches the minimum value).
By
Sandeep Singh Lingwal
Srinagar, Uttrakhand
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Why frankel defect is not seen in alkali metals?
The Frankel defect is the movement of cations in a crystal lattice, leading to the creation of vacancies. In alkali metals, the cations are mobile due to their low ionization energy and strong metallic bonding, which allows them to easily migrate and fill vacancies, preventing the formation of Frankel defects.
What is mass defect associated with?
Mass defect is associated with nuclear reactions and nuclear binding energy. It refers to the difference between the measured mass of an atomic nucleus and the sum of the masses of its individual protons and neutrons. This difference is released as energy when the nucleus is formed.
What does mass defect represent?
The Energy required o form a nucleus from its parts
The binding energy of an atomic nucleus is the energy equivalent to the atom's?
The binding energy of an atomic nucleus is the energy equivalent to the mass defect, which is the difference between the mass of the nucleus and the sum of the masses of its individual protons and neutrons. This energy is needed to hold the nucleus together and is released during nuclear reactions, such as fusion or fission.
What causes atrial septal defect?
O An atrial septal defect is sometimes called a hole in the heart it is a type of congenital heart defect, when there is an abnormal opening in the dividing wall between the upper filling chambers of the heart.
Why frankel defect is not seen in alkali metals?
The Frankel defect is the movement of cations in a crystal lattice, leading to the creation of vacancies. In alkali metals, the cations are mobile due to their low ionization energy and strong metallic bonding, which allows them to easily migrate and fill vacancies, preventing the formation of Frankel defects.
What is the difference between error and defect?
sequence number 5.5
What is the difference between Defect and Defective?
A defective product has a defect: "My phone is defective" "What defect does it have?" "The defect is that the screen is broken" To defect can also mean to switch sides e.g. from an army or a political party
What is the difference between defect detection and defect prevention?
The defects detection is the validation process. The defects prevention is a verification process.
What is the exact difference between an defect and failure?
failure->Because of software problems code does not able to work. Defect->incorrect code.
What is the difference between defect prevention and prediction?
defect prevention includes those strategies through which we avoid to occur a defect. for example formal risk analysis, prototyping. in defect prediction those areas are highlighted where there is possibility that defect can occur.
How is the mass defect determined?
The mass of a nucleus is subtracted from the sum of the masses of its individual components.
What is the mass defect?
If you add the exact mass of the protons, neutrons, and electrons in an atom you do not get the exact atomic mass of the isotope. The diference is called the mass defect. The difference between the mass of the atomic nucleus and the sum of the masses of the particles within the nucleus is known as the mass defect.
What is the difference between the risk and defect?
A risk is a potential problem that you are aware of, while it may not definitely occur. A defect however, is a fault, usually in the physical manufacturing or programming. One risk may be a defect...
What is difference between damage and defect?
Damage refers to physical harm caused to an object that may affect its function or appearance, often resulting from an external force or impact. Defect, on the other hand, refers to a flaw or imperfection in an object's design or construction that may affect its functionality or performance, typically present from the manufacturing process.
What term describes the tiny difference in mass between the products and reactants of a nuclear change?
The term that describes the tiny difference in mass between the products and reactants of a nuclear change is "mass defect." This difference in mass is converted into energy according to Einstein's famous equation E=mc^2, which explains the principle behind nuclear reactions.
What is difference bet defect and defective?
defect has few problems defective could not be used or not usable
