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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
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
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
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
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
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
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
CBSE - XII Science - Chemistry - The Solid State
What is meant by a Buckminster Fullerene?
Asked by Topperlearning User
17th June 2016,
9:56 AM
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
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
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
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
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
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
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.
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
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
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
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
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
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
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
CBSE - XII Science - Chemistry - The Solid State
fe crystallise in several modifications at about 910 degree celcius bcc form called alpha form undergoes transition to gamma form with fcc lattice.assuming that the distance between 2 nearest neighbouring particles is same in two forms at the transition temperature.calculate the ratio of density of gamma iron to that of alpha iron at the transition temperature.
Asked by PratibhaPandey
30th July 2014,
10:58 PM
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 ?
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
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
CBSE - XII Science - Chemistry - The Solid State
The well known mineral fluorite is chemically calcium fluoride. It is know that in one unit cell of this mineral, there are 4 Ca2+ ions and 8 F- ions and that Ca2+ ions are arranged in fcc lattice. The F- ions fill all the tetrahedral holes in the face centred cubic lattice of Ca2+ions. The edge of the unit cell is 5.4610-8 cm in length. The density of the solid is 3.18 g cm-3. Use this information to calculate Avogadro's number (Molar mass of CaF2 = 78.08 g mol-1)
Asked by Topperlearning User
4th June 2014,
1:23 PM
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
CBSE - XII Science - Chemistry - The Solid State
The well known mineral fluorite is chemically calcium fluoride. It is know that in one unit cell of this mineral there are 4 Ca2+ ions and 8 F- ions and that Ca2+ ions are arranged in an fcc lattice. The F-ions fill all the tetrahedral holes in the face centred cubic lattice of Ca2+ions. The edge of the unit cell is 5.4610-8 cm in length. The density of the solid is 3.18 g cm-3. Use this information to calculate Avogadro's number (Molar mass of CaF2 = 78.08 g mol-1)
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XII Science - Chemistry - The Solid State
Asked by Topperlearning User
4th June 2014,
1:23 PM
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
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
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
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
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
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
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
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
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
CBSE - XII Science - Chemistry - The Solid State
Recognize and name the following primitive cells.
Asked by Topperlearning User
4th June 2014,
1:23 PM
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
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
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
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
CBSE - XII Science - Chemistry - The Solid State
Distinguish between Triclinic and monoclinic unit cell.
Asked by Topperlearning User
4th June 2014,
1:23 PM
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
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
CBSE - XII Science - Chemistry - The Solid State
i) How many unit cells are present in a cube-shaped ideal crystal of NaCl of mass 1gm?
ii) Total volume of atoms present in a face center cubic unit cell of a metal (r is atomic radius) is?
iii) In a solid "AB" having NaCl structure "A" atoms occupy the cubic unit cell.If all the face-centred atoms along one of the axes are removed,then the resultant stoichiometry of the solid is________?
Asked by Abhilasha T.
20th May 2014,
3:15 PM
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
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
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
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
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
