MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: R

There are no items in this cart.
Continue Shopping
Menu
Get instant 20% OFF on Online Material.
coupon code: MOB20 | View Course list

  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: R 15,000
  • View Details
Get extra R 3,000 off
USE CODE: CART20

				   

height of hcp unit cell


 

4 years ago

Share

Answers : (1)

										

Dear Mukal,


A,B,C,E (red dots) will represents the centres of sphere of atoms in HCP closed packing,


now, AB=BC=CA=EB = 2R (edge lengths of HCP)


BD=\frac{2R}{\sqrt{3}}  ,as BD divides the median through B in 2:1 ratio from B...


now EDB is rt. triangle,


by pythagores theorem :


(\frac{2R}{\sqrt{3}})^2+h^2=(2R)^2


=> h=2R\sqrt{\frac{2}{3}}


now, their will be another atom which will be mirror image of E on plane ABC


so, the height (c) of HCP will be 2h


c=2h=4R\sqrt{\frac{2}{3}}


Best Of luck


Cracking IIT just got more exciting,It s not just all about getting assistance from IITians, alongside Target Achievement and Rewards play an important role. ASKIITIANS has it all for you, wherein you get assistance only from IITians for your preparation and win by answering queries in the discussion forums. Reward points 5 + 15 for all those who upload their pic and download the ASKIITIANS Toolbar, just a simple  to download the toolbar….


So start the brain storming…. become a leader with Elite Expert League ASKIITIANS


Thanks


Aman Bansal


Askiitian Expert



4 years ago

Post Your Answer

i want help and guidance on how to study for jee mains 2016 as i am a dropper this year and do not want to join coaching classes . need assistance to know how to get about 200 marks in jee...
 
 
Stay focused on your studies and keep in mind that one must focus on Physics, Chem and Maths, try to fortify these three, take some coaching classes from a reputed place like Akash Inst...
 
Ayushmaan Vardhan 10 months ago
 
Try to make out what are the weaker points in the field of PCM, work harder on them, download concerned topic papers and practice them, define a proper time for practice, join some reputed...
 
Soneel Verma 10 months ago
 
Hi, the main ingredient for success is discipline. It requires discipline to study systematically and sincerely. There are a variety of brilliant reference books you can use. Math – McGraw...
 
Kalyani Jayachandran Menon 10 months ago
i am getting 116 marks in jee main 2016 will i qualify for jee advanced 2016 are ther any bonus marks in the paper
 
 
Dear student, 1 or 2 questions are expected to get bonus this time in jee 2016. but final jee’s decision will be final on this not any one else. Your score is good enough to allow you...
  img
Nishant Vora one month ago
 
Yes you will get qualification for JEE ADVANCE
  img
Sourabh Singh one month ago
 
dear friend, if you get the 116 marks in jee main, you will definately qualify to the jee advanced.. Not only 116 , you got only 105 marks you will admitted to jee advanced, it is this year ...
 
mohan one month ago
Hi, Which online test series would you consider the best for preparing for JEE? Thanks.
 
 
I think, askiitians would be the best one, because, its the only one that offers such an online programme at a cost of online test series.. you must discuss it with askiitians faculty..
  img
Saurabh Kumar 10 months ago
 
You can enroll for online coaching on askiitians website http://www.askiitians.com/iit-jee/online-coaching/
  img
Avinash 10 months ago
 
if you are good in concepts then i will prefer resonance................
 
arsalan nazim 10 months ago
sir i got 3872 obc rank and 17163 AIR in iit advanced 2015 for first round seat allotment i didn’t got any seat is there any chance to got seat in iit for further rounds pls give me an...
 
 
Dear student, Pls check the opening and closing rank of colleges and branch that you want Thanks
  img
Nishant Vora 10 months ago
 
Please check the opening and closing rank in jee advanced website
 
vb 10 months ago
hello Sir, I am a B.Tech student from cse steam and I have selected in a good multinational company and I am willing to write GATE 2010.Most of my friends suggested me to opt for the job as...
 
 
If you are from IIT then there is not write any gate exam and M Tech will not be a good choice. because after M Tech fron any IIT , the salary difference will be 5 to 8K@month only. and that...
 
AskiitianExpert Pramod-IIT-R 6 years ago
what is the furture scope in haking
 
 
Hacking have a good scope. Many companies regares a good programing skill person, and I think that a hacker have it. Also you can go for higher studies in it. Thanks.
  img
Vijay Mukati 10 months ago
 
As ethical hacking has a wider scope, so it opens a lot of career opportunities. The designations that can be achieved by the person involves: Network Security System Administrator/Manager...
 
Gayatri Jayesh Bondriya 10 months ago
 
There is a very wide scope in the field of Hacking, but it has to be an ethical one, one must work for intelligence, telecom companies, Police deptt, Defence forces etc and you may be an...
 
Ayushmaan Vardhan 10 months ago
View all Questions »

  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: R 15,000
  • View Details
Get extra R 3,000 off
USE CODE: CART20

  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: R 15,000
  • View Details

Get extra R 3,000 off
USE CODE: CART20

More Questions On IIT JEE Entrance Exam

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!!
Click Here for details