Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 38, Problem 9P
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Polonium, the Period 6 member of Group 6A(16), is a rare radioactive metal that is the only element with a crystal structure based on the simple cubic unit cell. If its density is 9.142 g/cm³,calculate an approximate atomic radius for polonium.
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Chapter 38 Solutions
Physics for Scientists and Engineers
Ch. 38 - Prob. 1PCh. 38 - Prob. 2PCh. 38 - Prob. 3PCh. 38 - Prob. 4PCh. 38 - Prob. 5PCh. 38 - Prob. 6PCh. 38 - Prob. 7PCh. 38 - Prob. 8PCh. 38 - Prob. 9PCh. 38 - Prob. 10P
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- Sn, C, and Si, Ge are all group XIV elements. Yet, Sn is a conductor, C is an insulator while Si and Ge are semiconductors. Why?arrow_forwardThe atomic weight of hypothetical alloy is 77.4 g/mol, density is 8.22 g/cm', and atomic radius is 0.125 nm, determine whether its crystal structure is FCC, BCC, or simple cubic and then justify your determinationarrow_forwardIf a pentavalent element like antimony is doped to an extent of 1 atom in 10^8 germanium atoms what will be the conductivity after doping? (Concentration of germanium atoms in given sample is calculated as 4.41*10^28/m^3; consider the mobility of electron and hole as 0.38 and 0.18m^2/V.s, respectively)arrow_forward
- Why are elemental dopants for Silicon or Germanium usually chosen from group XIII or group XV?arrow_forwardHowever, the molecule we can encounter everyday continuously vibrates and interact with the surrounding causing its bond vector to vary slightly. According to a new spectroscopy analysis, the adjacent bond vectors was found to be A = 0.82i + 0.99j + 0.84k B = 1.09i + -1.01j + -0.97k What is the angle (in degrees) between the bonds based on this new data?arrow_forwardWhich of the following elements would you predict to have properties most like those of silicon (Si): aluminum (Al), phosphorus (P), or germanium (Ge)? (Consult the periodic table.)arrow_forward
- Calculate the value of ni in germanium at a temperature of 300 K.arrow_forwardThe mean speed of conduction electron in Cu is electrons1.5 × 106 ms-1 and the frequency of vibration of the copper atoms at room temperature is about 4 × 1012 s-1. Estimate the drift mobility of electrons and the conductivity of Cu. The density of Cu is 8.96 g cm-3 and the atomic mass is 63.56 g mol-1.arrow_forwardNiobium metal becomes a superconductor(with zero electrical resistance) when cooledbelow 8.3 K.The permeabilty of free space is 1.25664 ×10−6 N/A2.If superconductivity is destroyed when thesurface magnetic field exceeds 0.15 T, determine the maximum current a 3.2 mm diameter niobium wire can carry and remain superconducting.Answer in units of A.arrow_forward
- in a p type germanium ni=2.1×10^19m^-3 denisty of baran 4.5^23 atoms/m^3 the electron nd holes mobility are. 4 nd. 2m^2v^-2s^-1 resp. what is its conductivity befor nd after additiin of boran atomsarrow_forwardThe measured density of a CsCl crystal is 3.988 g/cm3. What is the equilibrium separate distance of Cs+ and Cl- ions?arrow_forwardPlease show your solution. Thank you! Compute for the density of palladium which crystallizes in an fcc unit cell, and has an atomic radius of 1.3748x10^-8 cm. Type your answer in whole number.arrow_forward
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