The atomic radius of calcium in its cubic close packing structure is given and its density has to be determined. Concept introduction: In packing of atoms in a crystal structure, the atoms are imagined as spheres. The two major types of close packing of the spheres in the crystal are – hexagonal close packing and cubic close packing. Cubic close packing structure has face-centered cubic (FCC) unit cell. In face-centered cubic unit cell, each of the six corners is occupied by every single atom. Each face of the cube is occupied by one atom. Each atom in the corner is shared by eight unit cells and each atom in the face is shared by two unit cells. Thus the number of atoms per unit cell in FCC unit cell is, 8 × 1 8 atoms in corners + 6 × 1 2 atoms in faces = 1 + 3 = 4 atoms The edge length of one unit cell is given by a = 2R 2 where a = edge length of unit cell R = radius of atom
The atomic radius of calcium in its cubic close packing structure is given and its density has to be determined. Concept introduction: In packing of atoms in a crystal structure, the atoms are imagined as spheres. The two major types of close packing of the spheres in the crystal are – hexagonal close packing and cubic close packing. Cubic close packing structure has face-centered cubic (FCC) unit cell. In face-centered cubic unit cell, each of the six corners is occupied by every single atom. Each face of the cube is occupied by one atom. Each atom in the corner is shared by eight unit cells and each atom in the face is shared by two unit cells. Thus the number of atoms per unit cell in FCC unit cell is, 8 × 1 8 atoms in corners + 6 × 1 2 atoms in faces = 1 + 3 = 4 atoms The edge length of one unit cell is given by a = 2R 2 where a = edge length of unit cell R = radius of atom
Solution Summary: The author explains that the atomic radius of calcium in its cubic close packing structure is given and its density has to be determined.
The atomic radius of calcium in its cubic close packing structure is given and its density has to be determined.
Concept introduction:
In packing of atoms in a crystal structure, the atoms are imagined as spheres. The two major types of close packing of the spheres in the crystal are – hexagonal close packing and cubic close packing. Cubic close packing structure has face-centered cubic (FCC) unit cell.
In face-centered cubic unit cell, each of the six corners is occupied by every single atom. Each face of the cube is occupied by one atom.
Each atom in the corner is shared by eight unit cells and each atom in the face is shared by two unit cells. Thus the number of atoms per unit cell in FCC unit cell is,
8×18atomsincorners+6×12atomsinfaces=1+3=4atoms The edge length of one unit cell is given bya=2R2where a=edge length of unit cellR=radiusofatom
Part I.
a)
Draw reaction mechanism for the transformations of benzophenone to benzopinacol to benzopinaco lone
b) Pinacol (2,3-dimethyl, 1-3-butanediol) on treatment w/ acid gives a mixture of pina colone
(3,3-dimethyl-2-butanone) and 2, 3-dimethyl - 1,3-butadiene. Give reasonable mechanism
the formation of
the products
For
3. The explosive decomposition of 2 mole of TNT (2,4,6-trinitrotoluene) is shown below:
Assume the C(s) is soot-basically atomic carbon (although it isn't actually atomic carbon in real life).
2
CH3
H
NO2
NO2
3N2 (g)+7CO (g) + 5H₂O (g) + 7C (s)
H
a. Use bond dissociation energies to calculate how much AU is for this reaction in kJ/mol.
Chapter 9 Solutions
Bundle: Chemistry: An Atoms First Approach, Loose-leaf Version, 2nd + OWLv2 with Student Solutions Manual, 4 terms (24 months) Printed Access Card
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Unit Cell Chemistry Simple Cubic, Body Centered Cubic, Face Centered Cubic Crystal Lattice Structu; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=HCWwRh5CXYU;License: Standard YouTube License, CC-BY