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

Explain consumer testing, Consumer testing Consumer testing is the ne...

Consumer testing Consumer testing is the next crucial aspect in product development. Consumer testing can be done in three ways: 1.  In-house laboratory testing   2.  Ho

Synthetic rubber - classification of rubber, Synthetic Rubber - Classificat...

Synthetic Rubber - Classification of Rubber The synthetic rubber is acquired by polymerising specific organic compounds that may have properties identical to rubber and some w

Concentration of the enzyme, The concentration of the product in the equili...

The concentration of the product in the equilibrium is enhancing with increasing concentration of the substrate.      ?     ? The concentration of the product in the equilibrium

Operation of tar, Write a program called tarc that performs much of the cf ...

Write a program called tarc that performs much of the cf operation of tar .The command arguments look like: If there are no ar guments, tarc reports an error and e xits. If ther

Forming ions, Write an equation that shows the formation of the selenide io...

Write an equation that shows the formation of the selenide ion from a neutral selenium atom

What is the main obstacle in using co2 as a reactant, From the point of vie...

From the point of view of "green chemistry" - why should reactions be carried out in CO 2 instead of using carbon monoxide or phosgene (2 reasons)? Apart from the compression of c

Homework, Calculate the amount of heat required to raise the temperature of...

Calculate the amount of heat required to raise the temperature of an 58 sample of water from 34c to 64c. Express your answer using two significant figures

Solutions, what volume in milliliters of 12.00M nitric acid (HNO3) stock so...

what volume in milliliters of 12.00M nitric acid (HNO3) stock solution would you us to make 750.0 ml of 3.00M nitric acid solution what volume in milliliters of 12.00M nitric acid

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