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

Assignment, LITHIUM AND BERYLLIUM MARKEDLY DIFFERENT FROM OTHER MEMBERS OF ...

LITHIUM AND BERYLLIUM MARKEDLY DIFFERENT FROM OTHER MEMBERS OF THEIR RESPECTIVE GROUP?.

When an electron jumps from l to k shell, When an electron jumps from L  ...

When an electron jumps from L  to K  shell: (1) Energy is absorbed   (2) Energy is released  (3) Energy is sometimes absorbed and sometimes  released (4) Energy is nei

Transition elements, Why transition elements form interstitial compound

Why transition elements form interstitial compound

Organic chemistry, wive the most stable structure of hexene

wive the most stable structure of hexene

Reversible reaction, what is the advantag of reversible reaction?

what is the advantag of reversible reaction?

Acidity of alcohol and phenol, observation reaction of alcohol and phenol w...

observation reaction of alcohol and phenol with sodium hydroxide

Derive gibbs duhem equation, (a) Derive a relationship between the elevatio...

(a) Derive a relationship between the elevation in boiling point of a solution and the mole fraction of the solute from the thermodynamic consideration. (b) The molal elevatio

Sphere packing, Sphere packing   Element structures where chemical...

Sphere packing   Element structures where chemical bonding is nondirectional are best explained by considering the packing of equal spheres. Close-packed structures are on

The model of trans-bicyclo decane, The model of trans-bicyclo decane T...

The model of trans-bicyclo decane The model of trans-bicyclo[5.3.0]decane is easier to build. The larger is a ring, the easier it is to compress the dihedral angle of the tran

Intermediate compound formation theory, can anyone explain the intermediate...

can anyone explain the intermediate compound formation theory in detail .?

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