5. Which ONE of the following substances is LEAST ionic?a. NaClb. KCIc. CuCl2d. SbCl46. Calculate the difference in electronegativity (AEN) for the bonds that would form between thegroups of atoms listed below. State whether the bond would be ionic, polar covalent or non-polarcovalent.a. N and Clb. B and Brc. B and Fd. Al and Oe. N and F

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Answered: 5. Which ONE of the following…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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An isotope of Radium decays exponentially and has a half-life of 3.3 hours. If 3.3 grams of this isotope is present initially, how many hours will it take for 40% of radium to decay?
7) Silver nanoparticles are embedded in clothing fabric to kill odor-causing bacteria. Silver crystallizes in an fcc unit cell. a. How many unit cells are present in a cubic silver particle with an edge length of 35 nm? b. How many silver atoms are there in this particle? c. If there are 1500 µg of silver per sock, how many of these particles does this mass correspond to? Heating Curve Temperature Boiling point Melting point Solid and liquid in equilibrium A Solid B C Liquid and vapor in equilibrium Liquid Time D Vapor
By definition, steel can contain up to [ ] percent carbon. It is uncommon to see steels containing more than [ ] percent carbon.
fill in the blanks When an element has its proper complement of valence electrons, it is electrically _________; when an atom has more or fewer than that number, it is an ion and has an electric charge. The charge is ________ when extra electrons are present and ________ when some are missing. .The ____________ bond is formed among metallic atoms when some electrons in the valence shell separate from their orbital path and exist in a free state like a cloud or gas. Surrounding the positive nuclei in this highly mobile state, the negative cloud bonds the atoms together. Because the electrons in the cloud do not “belong” to any particular atoms, the bond strengths can vary, deformation can take place without rupture, and good heat and electrical conductivity can occur owing to the easy movement of electrons from one atomic site to the next. This type of bonding makes possible some of the useful characteristics of metals, both mechanical properties and physical properties.
Which of the following alloys would form a complete substitutional solid solution? O Metal 1 is HCP, metal 2 is FCC, and atomic radius difference is less than 15%. O Metal 1 is BCC, metal 2 is BCC, and atomic radius difference is at least 15%. O Metal 1 is FCC, metal 2 is FCC, and atomic radius difference is 12%. O Metal 1 is BCC, metal 2 is FCC, and atomic radius difference is 12%. O Metal 1 is FCC, metal 2 is FCC, and atomic radius difference is 15%.
The diagram is a schematic illustration of what kind of defect? O A vacancy in an ionic ceramic O A vacancy in a metal O A dislocation O An interstitial impurity in a metal
Q: Not considering the many subatomic particles, name the three basic components of which atoms are made. What differences are there among the three? A: The three (3) basic components of which atoms are made, The ___________, which has a positive (+) electrical charge, and the _____________ , which has a neutral electrical charge, make up the nucleus. ___________ are particles of negative (-) electric charge which surround the nucleus in shells or orbitals.
How does size of atom vary when: a) moving horizontally in periodic table from left to right (same n) b) moving vertically down in periodic table(same group) c) when the atom(e.g Na) becomes an cation (e.g Na*) d) when atom (e.g Cl) becomes an anion e.g (CI)
a. What units must the constant 0.644 have?b. What should be the value of the constant when all units areconverted to English units (masses in lbm, lengths in ft, temperatures in oR,times in h, energies in Btu)? answer asap please
Which of the following statements are true of dislocations: Select one or more: a. Dislocations are spatially fixed defects b. Dislocations arise due to insertion of a foreign atom into a lattice site of a “host” metal c. Dislocations can be viewed without the aid of a microscope d. Dislocations enable plasticity in metals e. Dislocations can arise due to shear deformation of the lattice
4. Consider a binary alloy of A atoms and B atoms that can exist in a solid phase or a liquid phase. This alloy can also exist in TWO DIFFERENT PHASES SIMULTANEOUSLY: solid and liquid. The system is composed of one mole of atoms, some of which are A atoms and some of which are B atoms. Take GA and GB as the molar Gibbs free energy of pure A and pure B respectively. XA and XB are the molar fractions of A and B atoms respectively. The atoms crystallize in identical crystal structures when they are solid. (a) The starting conditions are such that a partition sits between the A atoms and B atoms so they do NOT mix. (i) Write an expression for the molar Gibbs free energy for the combination of pure components. (ii) Draw schematically how the molar Gibbs free energy of the combination of pure components varies with alloy composition.
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