The gap between valence and conduction bands in diamond is 5.47 eV. (a) What is the maximum wavelength of a photon that can excite an electron from the top of the valence band into the conduction band? In what region of the electromagnetic spectrum does this photon lie? (b) Explain why pure diamond is transparent and colorless. (c) Most gem diamonds have a yellow color. Explain how impurities in the diamond can cause this color.

Q: Determine the power absorbed by each of the elements below. 1 A + 8e mA ill -16e V 10-3 i1 2 V + 2 V…

A:

Q: Tin (Sn) has a superconductive critical temperature Tc = 3.7 K and critical magnetic field at T = 0…

A: Given : critical temperature of sn (TC) =3.7k critical magnetic field at T=0k = BC=H0= 31mT  current…

Q: Phosphorus (P) is present in a germanium (Ge) sample. Assume that one of its five valence electrons…

A: It is given that,

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Q: When a photon enters the depletion zone of a p-n junction, the photon can scatter from the valence…

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Q: An emission line of the CO molecule corresponding to a transition from its first excited state into…

A: Frequency = f = 115 GHz = 115 x 109 Hz speed = C = 3 x 108 m/s wavelength= ?

Q: Calculate the radius of a nickel atom in cm, given that Ni has an FCC crystal structure, a density…

A:

Q: Given that a solid has a FCC crystal structure with a density of 1585 kg/m³, and an atomic weight of…

A: Ans. B. 0.195 nm

Q: The lattice constant of the unit cell of aluminum (has FCC structure) is 0.404 nm. Determine the…

A: From the question, it is given that- Lattice constant of the unit cell: a = 0.404 nm

Q: The CO molecule has a dipole moment of 0.480x10-30 C m. Given that its equilibrium bond distance is…

A:

Q: In an n-type silicon, which of the following statement is true:(a) Electrons are majority carriers…

A: The semiconductor is a type of material and its conductivity lies between the conductor and…

Q: A hypothetical NH molecule makes a rotational-level transition from I= 3 to l = 1 and gives off a…

A:

Q: According to a new spectroscopy analysis, the adjacent bond vectors was found to be A = 1.07i +…

A:

Q: A sample of Si is doped with 1016 phosphorus atoms /cm³, find the Hall voltage in a sample with…

A: The data given is as follows: 1. Doping,  n=1016 atoms/cm3   =1016 atoms/10-6 m3n=1022 atoms/m3 2.…

Q: A hypothetical NH molecule makes a rotational-level transition from l= 3 to I = 1 and gives off a…

A: Mass of hydrogen= 1.67 x 10-27Kg Mass of nitrogen= 2.33 x 10-26Kg Wavelength of photon= 1.740 nm

Q: The mean speed of conduction electron in Cu is electrons1.5 × 106 ms-1 and the frequency of…

A: Given: Mean speed, v=1.5×106 m/s f=4×1012 s-1 density of Cu, ρ=8.96 g/cm3 atomic mass of Cu, M=63.56…

Q: 3. Germanium is doped with 5 x1015 donor atoms per cm3 at T = 300 K. The dimensions of the Hall…

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Q: Metals are good electrical conductors hence electrons on the surface of a conductor will arrange…

A: Given   Metal are good conductors thus electric field inside the conductor is ____

Q: In solid KCI the smallest distance between the centers of a. potassium ion and a chloride ion is 314…

A: The crystalline structure of KCl is face-centred cubic. The total number of ions present in one unit…

Q: from E-k curve, Q. 1; 3 Energy (eV) GaAs ΔΕ 0.31 Valence band [111] O k (a) 1. Energy gap, Eg 2.…

A: Given:- Eg= 1.42 ev

Q: At a certain temperature, the electron and hole mobilities in intrinsic germanium are given as 0.43…

A: Electron mobility: e = 0.43 m2/Vs Hole mobility: h = 0.21 m2/Vs  Electron concentration = Hole…

Q: Estimate the ratio of the electron densities in the conduction bands of gallium arsenide (E- 1.42…

A:

Q: Consider a face centered cubic (fcc) crystal in which one atom is placed at each lattice point. The…

A: Lattice = FCC lattice constant (a) = 0.7 nm

Q: (a) Calculate the fraction of atom sites that are vacant for copper (Cu) at a temperature of 975°C…

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Q: Calculate the planar density and planar packing fraction for the (010) and (020) planes in simple…

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Q: Find τ, μ for copper, given that p = 1.55 × 10 1e-8 n-m and the number of electrons for copper n =…

A: Given-  ρ = 1.55 × 10-8 Ω-mn = 2.54 ×1027 electron / m3

Q: Consider the NaCl molecule, for which the rotational inertia is 1.30x 10-45 kg*m2. If infrared…

A: Given, NaCl molecule rotational inertia I = 1.30 X 10-45 Kg m2 Wavelength λ=30 μm=30×10-6 m   We…

Q: The lattice parameter of copper is a = 0.360 nm. The atomic weight of copper is 63.5 g/mole. Copper…

A: Density (ρ)= Z×M/a3 NA

Q: Q2:- Germanium is doped with 6 x1015 donor atoms per cm3 at T = 300 K. The dimensions of the Hall…

A: Given that, donor atoms and temperature and dimensions of the hall device and current and voltage…

Q: The atomic radii of X+n and Y-m ions are 0.072and 0.133 nm, respectively. Calculate the attractive…

A: Potential energy = kq1 q2 /r

Q: The molar polarization of fluorobenzene vapour varies linearly with T−1, and is 70.62 cm3 mol−1 at…

A:

Q: If the radius of a calcium ion is 0.19 nm, how much energy does it take to singly ionize it? Give…

A: Radius of calcium ion (R) = 0.19 nm = 1.9 ×10-10 m

Q: The number of electrons excited in an element of band gap 2.12 eV is 2.09 x106.Calculate the…

A: The expression for the frequency is,

Q: The number of electrons excited in an element of band gap 2.12 eV is 2.09x106.Calculate the…

A: The energy emitted by the photon in the given band gap can be calculated as,

Q: However, the molecule we can encounter everyday continuously vibrates and interact with the…

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Q: Compute the magnitude of the electrostatic attraction energy between a silver cation (radius 129 pm)…

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Q: Use Õhm's law, KVL, and KCL to find V1. 3Ω 2 A V1 6Ω. 3Ω 3Ω

A: Detailed solution of this question is given in below steps.

Q: Graph below shows the electron occupancy probability P(E) as a function of energy for Bismuth (mB¡ =…

A:

Q: If a sodium chloride (NaCl) molecule could undergo an n S n - 1 vibrational transition with no…

A: The angular frequency formula is ω=kμ Where, k=Spring constantμ=reduced mass

Q: in a p type germanium ni=2.1×10^19m^-3 denisty of baran 4.5^23 atoms/m^3 the electron nd holes…

A: The expression for the conductivity before the addition of boron atoms, σ=nieμe+μn   Substitute,…

Q: 5. In a P-type germanium, n¡ 2.1 × 1019 m-³density of boran 4.5 x 1023 atoms /m3. The electron and…

A: before adding any impurity the semiconductor is intrinsic. Its conductivity is given by σ=nie(μe+μh)…

Q: A hypothetical NH molecule makes a rotational-level transition from \= 3 to | = 1 and gives off a…

A: Wavelength= 1.8 nm   Transition from l= 3 to l= 1

Q: What is the critical temperature Te for Hg known as superconductors? O A) 3.3 K B) 2.4 K OC) 5.2 K…

A: Critical temperature: The critical temperature of a superconductor is defined as the temperature at…