Purchase Solution

Primitive Cubic, Body Centered Cubic and Face Centered Cubic

Not what you're looking for?

Ask Custom Question

1. Describe the primitive cubic, body centered cubic and face centered cubic unit cells.

2. Compare quantum mechanical and bohr model of atom.

3. Draw molecular orbital energy diagrams for Li2 and Be2. What is the bond order in each of these species?

4. When calcium hydride (CaH2) reacts with water, hydrogen gas is evolved.
a) Write the chemical equation for the reaction.
b) If 5.00g of CaC2 reacts with, excess water, at 25 degrees C, what volume of H2 is collected at 760 torr? (Vapour pressure of water= 23.8 torr)

5)Estimate H'rxn for the reaction: CH4+Cl2--->CH3Cl+HCl where the average bond enthalpy in kj/mol. For C-H is 413 Cl-Cl is 242 C-Cl is 328 and H-Cl is 431.

6. The cyanate ion (NCO-)
a) Draw three lewis structures and state most valid.
b) Why isn't octet rule obeyed in one of the structures?
c) What is the hydridization of carbon in each structure?

Purchase this Solution
Solution Summary

The expert describes the primitive cubic, body centered cubic and face centered cubic unit cell.

Solution Preview

1.
The unit cell is the smallest repeat unit of a crystal structure.
Simple cubic: one atom in each corner of the cube
Body centred cubic: one in each corner and one in the centre of the cube
Face centred cubic: one in each corner and one in the centre of each face

2.
The Bohr Model has an atom ...

Purchase this Solution
Free BrainMass Quizzes
Basic Physics

This quiz will test your knowledge about basic Physics.

Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

The Moon

Test your knowledge of moon phases and movement.

View More Free Quizzes
Related BrainMass Solutions

  • Mass Volume and Density of unit cell of lead

    32657 Mass, Volume and Density of unit cell of lead Lead has an atomic radius of 175 pm and crystallizes in a face centered cubic structure.

  • HCP vs. CCP vs BCC

    Cubic Closet Packaging (face-centered) vs. Body-centered in terms of efficiency. Calculation of coordination number and density for each.

  • Radius/Density From bcc and fcc Unit Cells

    Explain what is meant by critical point, triple point, and critical temperature Krypton crystallizes as a fcc(face centered cubic unit cell) having an edge length of 559 pm. (a.)What is the density of solid Krypton?

  • Solids

    32711 Solids Lead has an atomic radius of 175 pm and crystalizes in a face centered cubic structure. Find the mass of the unit cell in grams, the volume of the unit cell in cubic centimeters, and the density of the lead in g/cubic centimeters?

  • Question bank - Bravais Lattice, Miller indices, Bragg's Law

    We know that face centered lattice in cubic and orthorhombic (FCC & FCO) system are listed in Bravais lattice system but face centered tetragonal (FCT) is not listed, why? 2.

  • Polarity, bond dissociation energy of molecules

    See attached In a face-centered cubic lattice, the atoms are found at the corners and on every face of the cubic lattice. In this case, each unit cell contains an equivalent of 4 atoms.

  • Crystalline Solid Structure

    24916 Crystalline Solid Structure Calculate the radius of a vanadium atom, given that V has a BCC (Body-centered cubic) crystal structure, a density of 5.96 g/cm^3, and an atomic weight of 50.9 g/mol. Please see attached file

  • Solid State Metallic Radius

    Cesium has a body centered cubic crystal structure: This means that each unit cell contains Ncell=2 Cesium atoms (1/8th of an atom from each of the eight corners and full atom from the center).

  • Structures of Solids

    A common mistake made by students is the description of the CsCl structure as body centered cubic. What is the CsCl structure? Demonstrate two different ways that the correct stoichiometry is predicted by your answer.

View More Related Solutions