Physical Universe
16th Edition
ISBN: 9780077862619
Author: KRAUSKOPF, Konrad B. (konrad Bates), Beiser, Arthur
Publisher: Mcgraw-hill Education,
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Question
Chapter 10, Problem 24E
To determine
Which is expected to be more active among calcium or magnesium and this has to be explained in terms of atomic structure.
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Students have asked these similar questions
(a) Using the periodic table provided, write down the shorthand electron notation for the following three
elements and indicate whether they are active, inactive or intermediate:
Scandium (Sc):
Argon (Ar); Aluminium (Al)
(b) Metals are conductors of electricity whereas insulators such as ceramic materials are not. Using the
honding theory, show and explain why metals are conductors and ceramics are insulators.
(c) Aluminium is a good conductor of electricity. A 100 m aluminium wire of diameter 2.25 mm is to be
used in domestic electrical wiring. If a voltage of 250V and a current of 13 amps are needed,
answer the following
i.
What is the conductivity of the aluminium wire?
ii.
Give two reasons why aluminium wire is not used in domestic wiring in Zambia?
ii.
Give three applications of pure aluminium.
A hypothetical metal has the simple cubic crystal structure. If its atomic
weight is 74.5 g/mole and the atomic radius is 0.145 nm, compute its density
and atomic packing factor. How many number of atom per unit cell, and
coordinate number of this structure
Explain why D-glyceraldehyde and L-glyceraldehyde are optical. Clarify the use of the D and L designation vs. the (+) and (-) signs?
Chapter 10 Solutions
Physical Universe
Ch. 10 - Prob. 1MCCh. 10 - Prob. 2MCCh. 10 - Prob. 3MCCh. 10 - Prob. 4MCCh. 10 - Prob. 5MCCh. 10 - Prob. 6MCCh. 10 - Prob. 7MCCh. 10 - Prob. 8MCCh. 10 - Prob. 9MCCh. 10 - Prob. 10MC
Ch. 10 - Prob. 11MCCh. 10 - Prob. 12MCCh. 10 - Prob. 13MCCh. 10 - Prob. 14MCCh. 10 - Prob. 15MCCh. 10 - Prob. 16MCCh. 10 - Prob. 17MCCh. 10 - Prob. 18MCCh. 10 - Prob. 19MCCh. 10 - Prob. 20MCCh. 10 - Prob. 21MCCh. 10 - Prob. 22MCCh. 10 - Prob. 23MCCh. 10 - Prob. 24MCCh. 10 - Prob. 25MCCh. 10 - Prob. 26MCCh. 10 - Prob. 27MCCh. 10 - Prob. 28MCCh. 10 - Prob. 29MCCh. 10 - Prob. 30MCCh. 10 - Prob. 31MCCh. 10 - Prob. 32MCCh. 10 - Prob. 33MCCh. 10 - Prob. 34MCCh. 10 - Prob. 35MCCh. 10 - Prob. 36MCCh. 10 - Prob. 37MCCh. 10 - Prob. 38MCCh. 10 - Prob. 39MCCh. 10 - Prob. 40MCCh. 10 - Prob. 1ECh. 10 - Prob. 2ECh. 10 - Prob. 3ECh. 10 - Prob. 4ECh. 10 - Prob. 5ECh. 10 - Prob. 6ECh. 10 - Prob. 7ECh. 10 - Prob. 8ECh. 10 - Prob. 9ECh. 10 - Prob. 10ECh. 10 - Prob. 11ECh. 10 - The Bronze Age got its name from the ability of...Ch. 10 - Prob. 13ECh. 10 - What energy change would you expect when a...Ch. 10 - Prob. 15ECh. 10 - Prob. 16ECh. 10 - Prob. 17ECh. 10 - Prob. 18ECh. 10 - Prob. 19ECh. 10 - Prob. 20ECh. 10 - Prob. 21ECh. 10 - Prob. 22ECh. 10 - Prob. 23ECh. 10 - Prob. 24ECh. 10 - Prob. 25ECh. 10 - Prob. 26ECh. 10 - Prob. 27ECh. 10 - Prob. 28ECh. 10 - Prob. 29ECh. 10 - Prob. 30ECh. 10 - Prob. 31ECh. 10 - Prob. 32ECh. 10 - Prob. 33ECh. 10 - Prob. 34ECh. 10 - Prob. 35ECh. 10 - Prob. 36ECh. 10 - Prob. 37ECh. 10 - Prob. 38ECh. 10 - Prob. 39ECh. 10 - Prob. 40ECh. 10 - Prob. 41ECh. 10 - Prob. 42ECh. 10 - Prob. 43ECh. 10 - How many atoms of which elements are present in a...Ch. 10 - Prob. 45ECh. 10 - Prob. 46ECh. 10 - Prob. 47ECh. 10 - Prob. 48ECh. 10 - Prob. 49ECh. 10 - Prob. 50ECh. 10 - Prob. 51ECh. 10 - Prob. 52ECh. 10 - Prob. 53ECh. 10 - Prob. 54ECh. 10 - Prob. 55ECh. 10 - Prob. 56ECh. 10 - Prob. 57ECh. 10 - Prob. 58ECh. 10 - Prob. 59ECh. 10 - Prob. 60ECh. 10 - Prob. 61ECh. 10 - Prob. 62E
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Similar questions
- The plot below shows bonding energy vs. interatomic separation for two elements. АВ %3D A. Which element would you expect to have a lower melting point? A same can't tell provide a brief justification of your choice. B. Which element would you expect to have a smaller lattice constant? A B same can't tell provide a brief justification of your choice. C. Which element would you expect to have a larger elastic modulus? A B same can't tell provide a brief justification of your choice. D. Which element would you expect to have the highest yield stress? A B same can't tell provide a brief justification of your choice. Bonding energyarrow_forwardA Frenkel defect involves which of the following? Select one: a. An anion vacancy b. A cation interstitial C. A cation vacancy d. A cation vacancy and a cation interstitial e. An anion interstitialarrow_forwardIn the periodic table: Elements in the same group have the same valence charges. O False O Truearrow_forward
- An atom that is considered a "good" electron needs to have an available energy level that is lower than the energy of a valence electron of a different atom. An atom that is considered a "poor" electron will have the valence electrons be at a higher energy than other atoms. Given this, consider rows 2 and 5 in the periodic table. Why should fluorine, in row 2, be more reactive than iodine, in row 5, while lithium, in row 2, is less reactive than rubidium, in row 5?arrow_forwardDistinguish between the coordination number and number of atoms per unit cell. Find out packing fraction for: (i) Simple cubic, (ii) body centered and face centered cubic unit cells.arrow_forwardBased on their locations on the periodic table, which two elements would you expect to form positive ions with a +3 charge?arrow_forward
- Lithium atoms, like hydrogen atoms, have only a single electron in their outer shells, yet lithium atoms do not join together to form Li2 molecules the way hydrogen atoms form H2 molecules. Instead, lithium is a metal with each atom part of a crystal lattice. Why?arrow_forwardOne amazing and useful fact about nature is that different elements and molecules each have a unique pattern of energy levels available to their electrons. These different patterns lead to different possible energy transitions for each element or molecule. How might scientists use this fact to identify the elemental composition of a distant star without even visiting the star?arrow_forwardQ. 2. Calculate the packing efficiency and density of sodium chloride from the following data: Radius of sodium ion= 0.98 A Radius of chloride ion= 1.81 A Atomic mass of sodium= 22.99 amu Atomic mass of chloride= 35.45arrow_forward
- Consider a hexagonal close packed cell with cell constants c and a (see figures below). Each atom in the central layer forms equilateral tetrahedron structures with the 3 atoms directly below it (bottom, red tetrahedron in figure on the right). a) Derive the ratio b) How many tetrahedral and octahedral interstitial sites are there per hcp unit cell? Explain your reasoning.arrow_forward(4) Predict the structure of CsCl. Given: radius of Cs+= 0.160 nm, radius of Cl-=0.181nm. Calculate the radius ratio between Cs+ and Cl- and derive the coordination number (CN) based on the table below. Rcation/Ranion CN 0-0.155 2 3 0.155-0.225 0.225-0.414 0.414-0.732 0.732-1 1 4 6 8 12arrow_forwardGiven that the radius of the Ca2+ and F- ions are 1.03 Å and 1.36 Å, respectively, show that the packing fraction of the CaF2 (Fluorite) structure is 0.61.arrow_forward
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