Polonium crystallizes in a simple cubic unit cell, Chemistry

Assignment Help:

polonium crystallizes in a simple cubic unit cell with an edge length of 3.36A.

1. what is the volume of the unit cell?

2. what is the volume of atom in the unit cell?

3. what is the packing efficiency of polonium?

Ans) Volume of unit cell = a3  = (3.36) = 37.93 cu Å

r = a/2 = 3.36/2 = 1.68

Vol of atom = 4/3*pi*r3 = {4*3.14*(1.68)3 }/3 = {4*3.14*4.74}/3 = 19.84 cu Å

Packing efficiency = Vol of atom * no. of atoms / vol of unit cell

For simple cubic, Packing efficiency = 19.84*1/37.93 = 0.52 = 52%


Related Discussions:- Polonium crystallizes in a simple cubic unit cell

Permanganate titrations - oxidation reduction titrations, Permanganate titr...

Permanganate titrations - Oxidation reduction titrations These are titrations where potassium permanganate is utilized as an oxidising agent in acidic medium. The medium is org

Atomic orbitals, Angular functions: 'shapes'   The mathematical func...

Angular functions: 'shapes'   The mathematical functions for atomic orbitals may be described as a product of two factors: the radial wavefunction defines the behavior of th

Uses of pyrogallol, Uses of pyrogallol (a) As a developer in photograph...

Uses of pyrogallol (a) As a developer in photography. (b) As a hair dye. (c) In medicine of skin diseases like eczema. (d) For absorbing none reacted oxygen in gas ana

Physical properties of malonic acid, Physical Properties of Malonic Acid ...

Physical Properties of Malonic Acid (a) Malonic Acid is a white crystalline solid. (b) Malonic Acid's melting point is 135°C. (c) Malonic Acid is soluble in water and alc

Determien the least ionic, Which of the following is least ionic: (1) C...

Which of the following is least ionic: (1) C 2 , H 5 Cl                                       (2)  KCl                     (3)  BaCl 2               (4)  C 6 H 5 +

Name the health benefit of soya protein, Q. Name the health benefit of soya...

Q. Name the health benefit of soya protein? Soya protein reduces cholesterol levels in hypercholesterolemic individuals.

Electrochemical cells, I have this chemistry assignment. It basically says,...

I have this chemistry assignment. It basically says, "study and make a report on any two types of electrochemical cells". What do I do? I have no idea so please, I need some help.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd