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

Electromagnetic spectrum, Q. What is the electromagnetic spectrum? Ans...

Q. What is the electromagnetic spectrum? Ans. Light is a very small slice of the electromagnetic spectrum, just the wavelengths that our eyes can see, which range from abo

Electrons in atom having quantum value 4, What is the maximum number of ele...

What is the maximum number of electrons which can be accommodated in an atom in which the highest principal quantum number value is 4: (1) 10        (2) 18      (3) 32

Assignment, Nitro alkanes and alkyl nitries (preparation and properties)

Nitro alkanes and alkyl nitries (preparation and properties)

Uncertainty principle gave the concept, Uncertainty principle gave the conc...

Uncertainty principle gave the concept of: (1) Probability (2) An orbital (3)Physical meaning of Ψ   the Ψ   (4)All the above Ans:  Probability

Quantum numbers, For which of the following sets of four quantum numbers, a...

For which of the following sets of four quantum numbers, an electron will have the highest energy:             n            l             m            s

ELECTROCHEMISTRY, AT 25 DEGREES CELCIUS,THE MOLAR IONIC CONDUCTIVITIES OF C...

AT 25 DEGREES CELCIUS,THE MOLAR IONIC CONDUCTIVITIES OF CALCIUM IONS,MAGNESIUM IONS AND ZINC IONS 3.87,5.01 AND 7.35 MILISECONDS SQUARE METRE PER MOLE RESPECTIVELY.CALCULATE THEIR

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