The First Order Reflection Of A Beam Of  X – Rays Of Wavelength  from The (210) Plane Of A Crystal Of The Simple Cubic Type, Occurs At An Angle Of 11.290, The Length Of The Unit Cell Is

  1. Home
  2. JEE Main
  3. Chemistry
  4. Physical Chemistry
  5. Mole Concept

Why Kaysons ?

Video lectures

Access over 500+ hours of video lectures 24*7, covering complete syllabus for JEE preparation.

Online Support

Practice over 30000+ questions starting from basic level to JEE advance level.

Live Doubt Clearing Session

Ask your doubts live everyday Join our live doubt clearing session conducted by our experts.

National Mock Tests

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

Organized Learning

Proper planning to complete syllabus is the key to get a decent rank in JEE.

Test Series/Daily assignments

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

SPEAK TO COUNSELLOR ? CLICK HERE

Download JEE Question paper & Solution Download JEE Important questions Download Complete syllabus of Maths, Physics, Chemistry

Question

The first order reflection of a beam of  X – rays of wavelength  from the (210) plane of a crystal of the simple cubic type, occurs at an angle of 11.290, the length of the unit cell is

Solution

Correct option is

8.794 × 10-8 cm

 

 

1 × (1.54 × 10-8) = 2 × d × sin 11.29

                         d = 3.933 × 10-8 cm  

   

       

                            

                              = 8.794 × 10-8 cm

Download JEE Question paper & Solution Download JEE Important questions Download Complete syllabus of Maths, Physics, Chemistry

SIMILAR QUESTIONS

Q1

The density of solid argon is 1.65 g/mL at –233oC. If the argon atom is assumed to be sphere of radius 1.54 × 10–8 cm, what percentage of solid argon is apparently empty space?(At wt of Ar = 40).
medium View solution
Q2

A compound CuCl has fcc structure. Its density is 3.4 g cm–3, what is the length of unit cell?
easy View solution
Q3

A metal crystallizes into two cubic phases fcc and bcc whose unit cell lengths are 3.5 and 3.0 Å respectively. What is the ratio of densities of fcc and bcc?
easy View solution
Q4

The radius of a divalent cation M2+ is 94 pm and that of divalent anion X2–is 146 pm. Thus, M2+ X2– has
easy View solution
Q5

MgO has a structure of NaCl, the coordination number of O2– in MgO is
easy View solution
Q6

If NaCl is doped with 10–3 mol% of SrCl2, calculate the concentration of cation vacancies
medium View solution
Q7

The composition of a sample of wustite is Fe0.93 O. What percentage of the iron is present in the form of  Fe III?
easy View solution
Q8

A solid AB has the NaCI structure. If radius of cation A+ is 120 pm, the maximum possible value of the radius of the anion B- is
easy View solution
Q9

CsCl crystallizes in a cubic lattice that has a Cl- at each corner and Cs+ at the centre of the unit cell. What is the value of edge length a of the cube?  
easy View solution
Q10

 

KCI crystallises in the same type of lattice as does NaCI.

   

The ratio of the side of the unit cell for NaCI to that for KCI is
medium View solution