Explain the terms : (a) Intrinsic semiconductor (b) Extrinsic semiconductor.

Q: 03. How can we determine of the band-gap of gemanium from electrical measurements?

A: Band gap of semiconductor like germanium can be determined by the study of the Variation of its…

Q: The first LEDs were made from GaAs, which has a bandgap of 1.43 eV. What wavelength of light would…

A: Unit of energy is converted as follows,

Q: How does the Mineral Family- Oxides is used in everyday life and in Engineering activities?

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Q: Account for the relative band gap energies of semiconductors interms of periodic trends?

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Q: Tin is semiconductor La O F.b

A: Is Tin (Sn) a semiconductor.

Q: Account for the relative bandgap energies of semiconductors interms of periodic trends?

A: Semiconductors are materials which have a conductivity between conductors (generally metals) and…

Q: Silicon carbide (SiC) is made by the high-temperature reaction of silica sand (quartz) with coke;…

A: Given: At high temperature, the reaction of silica sand (quartz) and coke produces silicon carbide…

Q: The maximum wavelength of light that a certain silicon photocell can detect is 1.11 μm. (a) What is…

A: The energy difference between the top valence band and bottom of conduction band in terms of…

Q: Strontium titanate (SrTiO3) is another wide bandgap semiconductor that has been investigated for use…

A: For H2|H+ electrode the value of standard reduction potential is 0V. For O2|H2O electrode the value…

Q: How Band theory differentiate between semiconductors and semi materials?

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Q: Blue LEDS are made from In,Ga1-N semiconductors with a band gap in eV given by E, = 3.40 – 3.75x +…

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Q: Diffusion does not have an effect on______. a) Doping in semiconductors b) Production of alloys c)…

A: Diffusion doesn't not have an effect on heat treatment of metals .  In production of alloy the metal…

Q: Identify the following as either p- or n- type semiconductors.(a) germanium doped with arsenic(b)…

A: Answer:- This question is answered by using the simple concept of p- and n- type semiconductors…

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: c) Suggest and explain in detail one heat treatment procedure that can strengthen or harden the…

A: A metal when it is hardend,it is heated to a point where the element transform into a solution.

Q: What is the difference in energy between the valence band and conduction band of electrical…

A: Insulators have large energy gapSemi conductors have somewhat less energy gap than insulators…

Q: Determine the lattice constant, a (in nm), of a metal conforming to the FCC structure having an…

A: For a FCC lattice the relation between lattice constant (a) and radius of atom (r) is 4r=2a Here…

Q: What is semi-conductor?

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

Q: 10. Which of the following is known as indirect band gap semiconductors? Germanium Nickel Platinum

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Q: Define a semiconductor? Describe the two main types of semiconductorswhen it is doped with(a) group…

A: Semiconductors can be defined as the solids having conductivity in between those of conductors and…

Q: Would you expect carborundum(SiC) to adopt a diamond structure or one of higher coordination?…

A: Carbon and silicon are the elements of group 14 having 4 valence electrons in its outer most shell.

Q: Provide a general description of how hydrometallurgy is used to extract metals from ores.

A: Extractive metallurgy is the practice of removing valuable metals from an ore and refining the…

Q: Unlike metals, semiconductors increase their conductivityas you heat them (up to a point). Suggest…

A: The material that have electrical conductivity in between conductor and insulator is known as…

Q: (a) Two unlabelled bottles are suspected to contain beryllium and magnesium. (i) Suggest a simple…

A: we are requiredto distinguish two metal magnesium (Mg) and beryllium (Be)

Q: Explain how metallic conductors, semiconductors, and insulators are identified and explain their…

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Q: For each of the following pairs of semiconductors, pick which one would have the larger bandgap.…

A: SEMICONDUCTORS: Certain materials which has a conductivity which lies between nonconductors and…

Q: Direct bandgap semiconductor materials generally support radiative (optoelectronic) transitions…

A: Interpretation-  To interpret why direct bandgap semiconductor materials generally support radiative…

Q: (a) Give an example of zone refining of metals. (b) What is the role of cryolite in the metallurgy…

A: a) Zone refining of metals is the technique by which impurities are extracted from the metals and…

Q: why Intrinsic Semiconductor materials are the bad conductors of electricity

A: Semiconductor is actually a type of material which has  conductivity in between the conductor and…

Q: By making use of CFT in tetrahedral and octahedral geometries, predict whether nickel ferrite…

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Q: What is OFHC copper? Describe briefly its processing and comment on the applications of the metal…

A: alloys are the metallic  substance composed  of two or more elements as either a compound or…

Q: Lead is more often found in nature as its sulfide than its oxide. Provide a brief rationale for this…

A: Most of the proportion of lead is found in earth crusting, where it is in the form of sulfide ore.…

Q: Give answers of the following. a. Which allotropic forms of carbon are conductor and which are…

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Q: What are the main differences between Diamagnetic and Paramagnetic materials?

A: Diagmagnetic substances have zero unpaired electron and paramagnetic materials contain unpaired…

Q: Titanium Ruthenium Property Electron configuration of element [Ar]4s23d [Kr]5s²4d6 2 Oxidation state…

A: In semiconductors and insulators, electrons are confined to a number of bands of energy, and…

Q: Why do the alkaline earths have low resistivities?

A: Resistivity is the property of a substance that determines how a substance can efficiently resist or…

Q: What is linkage isomerisation and why can it be important?

A: Linkage isomers are two or more coordination compounds in which the donor atom of at least one of…