Under what conditions do zwitterions exist?

Q: Use the figure of band structures to explain why the conductivity of pure metals decreases when…

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Q: Explain Kohlrausch’s law of independent migration of ions. Mention two applications of this law.

A: Kohlrausch was the First to point out that when Λm for a uni-univalent strong electrolyte is plotted…

Q: Iron is held at a temperature of 720°C. If the energy for vacancy formation is 1.08 eV/atom,…

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Q: If Na+ ions were to substitute for magnesium ions in MgO, in order to preserve electroneutrality,…

A: Impurity defects are produced in the MgO crystal. Two Na+ ions replaced one Mg2+ ion for…

Q: With the help of the XRD pattern of the NaCl material given in the figure, the unit cell parameters…

A: XRD is X-ray diffraction analysis. By using this analysis one can get an overview of crystal…

Q: Calcium carbonate crystals in the form of aragonite have orthorhombic unit cells of dimensions a =…

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Q: Ultraviolet light with a wavelength longer than about 284.6 nm has little germicidal value. What is…

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Q: The number of vacancies in some hypothetical metal increases by a factor of 5 when the temperature…

A: The presence of vacancy in a crystal is a kind of point defect. The number of vacancies in a crystal…

Q: How does the doping increase the conductivity of semiconductors?

A: Conductivity of semiconductors:When a certain amount of suitable impurity or doping is added, the…

Q: Potassium nitrate crystals have orthorhombic unit cells of dimensions a = 542 pm, b = 917 pm, and c…

A: From the question, we obtain that- Potassium nitrate crystals have orthorhombic unit cells  a = 542…

Q: A solid is thought to have an orthorhombic structure. Calculate the positions D and 2θ for the plane…

A: Interpretation-  To calculate the position D and 2θ for the plane 111 expected in the diffraction…

Q: Platinum nanoparticles of diameter ∼2 nm are importantcatalysts in carbon monoxide oxidation to…

A: (a) For face-centered cubic crystal lattice, the relationship between radius and edge length is…

Q: Which of the following doped semiconductors will be p-type and which will be n-type?please explain…

A: Hi, since there are multiple subparts posted we will provide you with answers for the first-three…

Q: larger crystals can be obtained if the

A: Ans : evaporation rate is slow .

Q: The unit cell for tin has tetragonal symmetry, with a and b lattice parameters of 0.583 and 0.318…

A: From given a and b lattice parameters and density, atomic weight, atomic radius we are calculating…

Q: What is semi-conductor?

A: Conductors are those substances which allow the flow of heat and electricity through them while…

Q: When a metal is heated its density decreases. There are two sources that give rise to this…

A: The answer is attached below-:

Q: ketch the (1 1 1) and (1 11) planes in a simple cubic lattice. Show that (1 1 1) and (111) are a set…

A: Miller indices are the atomic representation in crystal lattice.

Q: Is it possible for for non-metals to have unit cell with face-centered cubic crystal structure?

A: Solid :-        Solid are the substance which having definite shape, volume, mass etc.       Solid…

Q: Explain pharmaceutical and medical applications of interfacial phenomenon. Quote the applications…

A: When two two different phases are brought in contact together then the interface forms, it is the…

Q: Solid CuI2 is unstable relative to CuI at room temperature, but CuBr2, CuCl2, and CuF2 are all…

A: Born haber cycle for CuI.CuI→Cus+12I2g         ∆E1Cus →Cug…

Q: (d) Doping can be used to increase conductivity of the substances, explain with examples. What are…

A: Doping increases the conductivity as follows.

Q: The unit cell for tin has tetragonal symmetry, with a and blattice parameters of 0.5 and 0.318 nm,…

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Q: Determine the indices of the zone axis of planes (111) and (123)

A: uh + vk + wl = 0. This is the so-called Weiss law. The indices of the zone axis defined by two…

Q: Determine the Miller indices for the planes shown in the following unit cell:

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Q: (c) (c) Determine the axis intersects of a surface with Miller Index (i) (220) (ii) (312) (d) Sketch…

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Q: QI. Calculate the linear density of directions [011] for BCC, and FCC crystal structures?

A: Body centred cubic close packing is represented as BCC whereas face centred cubic close packing is…

Q: 11) Pyroelectric crystals have the feature: a) Being anisotropic b) Having no inversion center c)…

A: Given,  Pyroelectric crystal have the feature : Options are : a). Being anisotropic b). Having no…

Q: The maximum proportion of the avalable volume that can be field with hard sphere identifes a )…

A: In crystallography, some volume of the crystal is filled by the particles (sphere) and some volume…

Q: Determine the Miller indices for the planes shown in the given unit cell.

A: Determine the Miller indices for the planes shown in the given unit cell.

Q: Calculate a value for the atomic radius of a chromium atom with a coordination number of 12 given…

A: Given that the crystal lattice is a bcc-centered cubic. The volume of a unit cell in bcc can be…

Q: Show that the atomic packing factor for FCC is 0.74.

A: We have to show that the atomic packing fraction of FCC is 0.74.

Q: What is the meaning of magnetic susceptibility, orbital motion, ferromagnetism and…

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Q: Q2. Calculate the planer density of planes (011) for BCC, and FCC crystal structures?

A: Planar density is defined as the number of atoms per unit area that is centered on a plane. So,…

Q: prove that the rc/ra =0.225 for coord number 4 in ceramic crystal structur

A: We have given coordination number given is 4 we want to show that minimum cation to anion ratio…

Q: State the number of atoms on a plane having the miller indices of 110 in a BCC unit cell.

A: BCC stands for body centered cubic unit cell and this type of unit cell contains an atom at each…

Q: Explain how doping can increase the conductivity of a semiconductor.

A: Conductivity is due to the mobility of electrons; therefore, conductivity can be increased by…

Q: Explain face centered cubic unit cell in the simplest way possible and create an overview about it…

A: Face centered cubic unit cell: It is a Nonprimitive cubic unit cell.  In case of simple cubic unit…

Q: Q2: Complete the following: 1. Freeze-out pheromone is... 2. A compensated semiconductor can be…

A: 1. Freezeout in the semiconductor: if the temperature is very less then the percentage ionization of…

Q: A/ determine the atomic weight of copper which has atomic radius of 0.128 nm and theoretical density…

A: Given:-

Q: Silver forms a face-centered cubic lattice, and a silver atom is 288 pm in diameter. Calcula

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Q: 14. Which of the following reflections would be missing in a bcc lattice: (100), (110), (111),…

A: Unit cell is the basic unit of crystal lattice that join together to form an entire lattice of a…

Q: How do the appearances of metals, semiconductors and insulators differ? Why?

A: A question based on conductivity property, which is to be accomplished.

Q: What kind/type of force does Schottky defects induces on its neighboring atoms? Explain.

A: Schottky defect: The Schottky defect is a type of point defect formed by a vacant position in a…