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Dimensions Of Unit Cells Free Doubts and Solutions

CBSE - XII Science - Chemistry - The Solid State

give a relationship between nearest neighbour distance(d),radius of atom(r), edge  of unit cell(a), for fcc and BCC crystal

Asked by ap996969 24th January 2019, 7:08 PM
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CBSE - XII Science - Chemistry - The Solid State

what is the number of octahedral sites per sphere in a f.c.c. structure.

Asked by shivamsaraswat484 23rd March 2018, 9:37 PM
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CBSE - XII Science - Chemistry - The Solid State

Potassium crystallizes in a body centered cubic lattice.what is tge aporoximate no.of unit cells in 4.0g of pottasium?

Asked by sethupathy 26th August 2017, 6:58 PM
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CBSE - XII Science - Chemistry - The Solid State

Name all the primitive unit cell in which all 3 sides are different.

Asked by Topperlearning User 17th June 2016, 10:11 AM
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CBSE - XII Science - Chemistry - The Solid State

Describe primitive cells in which all 3 sides are equal.

Asked by Topperlearning User 17th June 2016, 10:07 AM
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CBSE - XII Science - Chemistry - The Solid State

An element has a body centred cubic (bbc) structure with a cell edge of 288 pm. The density of the element is 7.2 g/cm3. How many atoms are there in 208 g of the element?

Asked by Topperlearning User 17th June 2016, 10:06 AM
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CBSE - XII Science - Chemistry - The Solid State

Ferric oxide crystalises as hexagonal close packing array of oxide ion two out of every three one octaheddral holes is occupied by ferric ions.derive the formula of ferric oxide .

Asked by Topperlearning User 17th June 2016, 10:00 AM
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CBSE - XII Science - Chemistry - The Solid State

What is meant by a Buckminster Fullerene?

Asked by Topperlearning User 17th June 2016, 9:56 AM
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CBSE - XII Science - Chemistry - The Solid State

Silver crystallizes in face-centred cubic unit cell. Each side of this unit cell has a length of 400 pm. Calculate the radius of the silver atom. (Assume the atoms just touch each other on the diagonal across the face of the unit cell. That is each face atom is touching the four corner atoms.)

Asked by Topperlearning User 17th June 2016, 9:55 AM
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CBSE - XII Science - Chemistry - The Solid State

An element has a body centered cubic structure with a cell edge of 288 pm. The density of the elements is 7.2 gcm-3. Calculate the number of atoms present is 208 g of the element.

Asked by Topperlearning User 17th June 2016, 9:53 AM
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CBSE - XII Science - Chemistry - The Solid State

Silver crystallises with face- centred cubic unit cells. Each side of the unit cell has a length of 409 pm. What is the radius of an atom of silver? (Assume that each face atom is touching the four corner atoms.)

Asked by Topperlearning User 17th June 2016, 9:53 AM
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CBSE - XII Science - Chemistry - The Solid State

Gold crystallizes as BCC and iron as FCC which element will have more number of atoms.

Asked by Topperlearning User 17th June 2016, 9:52 AM
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CBSE - XII Science - Chemistry - The Solid State

IN a solid AB having the NACL structure ,A atoms occupy the corners of cubic unit cell. if all the face centred atoms along one of the axes are removed then the resultant stiochiometry of the solid is.... show answer by proper steps

Asked by Farooq Ahmad Shah 11th April 2016, 9:15 PM
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CBSE - XII Science - Chemistry - The Solid State

Calculate the approximate number of unit cells Present in 1gm of Gold. Gold crystallizes in FCC @ AT mass of gold = 197u.  ?

Asked by vikmandal000 11th February 2016, 3:40 PM
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CBSE - XII Science - Chemistry - The Solid State

Silver metal crystallises with a face centred cubic lattice. The length of unit cell is found to be 4.077x10-8 cm. calculate atomic radius and density of silver.

Asked by Dave Agresha 20th July 2015, 8:35 AM
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CBSE - XII Science - Chemistry - The Solid State

How density of unit cell is same as density of a substance?
Explain in detail with the help of an example.

Asked by Shubhi Gupta 19th April 2015, 8:08 PM
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CBSE - XII Science - Chemistry - The Solid State

how can we say that a face centred cubic cell has 4 atoms? i don't understand.

Asked by Siva Raman K 16th April 2015, 2:54 PM
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CBSE - XII Science - Chemistry - The Solid State

An element with molarmass 0.027kg/mol forms a cubic unit cell with edge lrngth 405 pm if its density os 2700kg/m3. calculate the number of atoms and unit cell in 150g of element.

Asked by Indra 25th January 2015, 9:02 AM
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CBSE - XII Science - Chemistry - The Solid State

what are the no of atoms in an edge centered unit cell and how to calculate for edge center?

Asked by Arghadeep 15th November 2014, 10:54 PM
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CBSE - XII Science - Chemistry - The Solid State

Can you tell me how to calculate density of a cell using log???(please give an example)

Asked by rakshitreshu1997 30th October 2014, 12:28 AM
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CBSE - XII Science - Chemistry - The Solid State

I want to ask that whether the sides of the 7 lattices of primitive section are specific. I mean to say that are the sides a,b and c are arbitrary or they are fixed. Can we take any of the sides as a,b and c. I have the same query with angles also.

Asked by shaktiisgreat000 15th August 2014, 10:07 PM
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CBSE - XII Science - Chemistry - The Solid State

from referring to your video i didn't understand how you come to know that here the silver is fcc where z=4 

as the question was :
Calculate the atomic mass of silver ,  where a=4.05 multiply by 10 raise to the power -8 cm  and d=10.5 g/cm cube ?   

Asked by deepu 30th July 2014, 9:33 PM
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CBSE - XII Science - Chemistry - The Solid State

why "Z" (no. of atoms present per unit cell) for cscl is 1?

Asked by Nishtha Sardana 11th July 2014, 11:50 AM
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CBSE - XII Science - Chemistry - The Solid State

Silver crystallizes in face-centred cubic unit cell. Each side of this unit cell has a length of 400 pm. Calculate the radius of the silver atom. (Assume the atoms just touch each other on the diagonal across the face of the unit cell. That is each face atom is touching the four corner atoms.)

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

The densities of the various forms of carbon are shown in the table below. Explain the drastic change in density between the various forms of carbon. Form of Carbon Density (grams/cubic centimeter) Amorphous carbon 1.8 - 2.1 Buckminsterfullerene  C60 1.69 Graphite 1.9 - 2.3 Diamond 3.50 - 3.53

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

Calculate the density for nickel if the unit cell edge length for nickel given is 0.3524 nm and atomic mass is 58.69 g /mol. It crystallizes as a simple cube.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

How is the ideal density of a substance calculated from unit cell data?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

Calculate the density for if the diamond. Cell volume = 45.385 x 10-24cm3 and Atoms/unit cell = 8 (atomic mass of carbon is 12u).

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

Element A, B and C crystallize as body centered, simple cube and face centered cubic unit cells respectively. Which one will have least number of atoms and why.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

Give the volume of a simple cube, face centered cube and body centered cube in terms of radius of the sphere forming the close packing.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

Silver crystallizes in fcc lattice. If edge length is 4.07x10-8 cm and density is 10.5 g cm3, calculate the atomic mass of silver.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

Identify the type of unit cell and describe it.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

Recognize and name the following centered unit cells.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

Recognize and name the following primitive cells.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

Name and illustrate the parameter that characterise a unit cell in a crystal?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

If an element crystallizes in a unit cell with 1 atom in each of its body diagonal how many atoms will be there in the unit cell?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

Aluminium crystallizes as FCC. Calculate number of atoms that wil be present in the unit cell.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

Element crystallizes as BCC. How many atom will be present in the unit cell of the element.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

Distinguish between Triclinic and monoclinic unit cell.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

How do we identify primitive and centered cell.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

Show that edge centered cube and body centered cube has 2 atoms.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Chemistry - The Solid State

what are the  coordination numbers of Ca2+ and F- ions in CaF2 crystal structure?

Asked by vatsala srivastava srivastava 19th May 2014, 12:12 PM
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CBSE - XII Science - Chemistry - The Solid State

A metal M crystallizes in FCC and BCC structure depending upon the temperature. What would be the ratio of its density in FCC and BCC structures?

Asked by Pragyashree Jain 16th May 2014, 10:05 AM
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CBSE - XII Science - Chemistry - The Solid State

A metal M crystallizes in FCC and BCC structure depending upon the temperature. What would be the ratio of its density in FCC and BCC structures?

Asked by Pragyashree Jain 16th May 2014, 10:05 AM
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CBSE - XII Science - Chemistry - The Solid State

An element A has a ccp arrangement of atoms. The radius of A is equal to 143.2pm. Calculate the lattice parameter of the unit cell and the density of solid Al if its atomic weight = 30u.

Asked by Topperlearning User 1st April 2014, 3:37 PM
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CBSE - XII Science - Chemistry - The Solid State

Calculate formulas if atom A forms ccp, B occupies ½ tetrahedral void & atom C occupies all octahedral void.

Asked by Topperlearning User 1st April 2014, 1:38 PM
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