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Packing Efficiency Free Doubts and Solutions

CBSE - XII Science - Chemistry - The Solid State

Unit cell consists of a cube in which anions(B)  are present at each corner and cations (A) at the centre of the alternate face of the unit cell what is the simplest formula of the compound

Asked by prasadranjan46 5th May 2018, 10:54 AM
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CBSE - XII Science - Chemistry - The Solid State

explain conduction band theory brifly ?

Asked by gargimoitreyee 12th March 2018, 11:51 PM
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CBSE - XII Science - Chemistry - The Solid State

which unit cell has least packing efficiency?
 

Asked by Ohi 13th June 2017, 12:04 PM
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CBSE - XII Science - Chemistry - The Solid State

An element exists as hexagonal close packed structure as well as cubic close packed structure. In which case the element would have higher density?

Asked by Topperlearning User 17th June 2016, 10:57 AM
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CBSE - XII Science - Chemistry - The Solid State

In a solid, oxide ions are arranged in CCP, cation A occupy one- sixth of the tetrahedral voids and cations B occupy one third of the octahedral voids. What is the formula of the compound?

Asked by Topperlearning User 17th June 2016, 10:56 AM
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CBSE - XII Science - Chemistry - The Solid State

What is the co-ordination number of atoms in BCC, HCP, CCP and simple lattices?

Asked by Topperlearning User 17th June 2016, 10:55 AM
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CBSE - XII Science - Chemistry - The Solid State

A FCC lattice cube is formed by atoms A and B. If atom A is present at the corner of the cube and the atom B at the faces of the cube. Find out the formula of the compound?

Asked by Topperlearning User 17th June 2016, 10:55 AM
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CBSE - XII Science - Chemistry - The Solid State

A cubic solid is made of two elements P and Q. Atoms P are at the corners of the cube and Q at the edge centre and the body centre .What is the formula of the compound?

Asked by Topperlearning User 17th June 2016, 10:54 AM
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CBSE - XII Science - Chemistry - The Solid State

In AB2O4, the oxide ions are placed in cubic close packed lattice, cation A is present in tetrahedral voids and cations B are present in octahedral voids. What is the percentage of tetrahedral and octahedral voids occupied by A and B respectively?

Asked by Topperlearning User 17th June 2016, 10:51 AM
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CBSE - XII Science - Chemistry - The Solid State

In chromium (III) chloride, CrCl3, the chloride ions have CCP (cubic close packing) arrangement and Cr (III) ions are present in octahedral holes. What fraction of the octahedral holes is occupied? What fraction of the total number of holes is occupied? 

Asked by Topperlearning User 17th June 2016, 10:50 AM
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CBSE - XII Science - Chemistry - The Solid State

A mettalic element crystallises into a lattice containing a sequence of layers of AB AB AB ...any packing of spheres leaves out voids in the lattice . What percentage by volume of this lattice is empty space 

Asked by Farooq Ahmad Shah 14th January 2016, 5:18 PM
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CBSE - XII Science - Chemistry - The Solid State

if in a fcc unit cell A atoms are at corners B  atoms are at face centres and one of A atoms are missing from each unit cell then what is the formulae of compound

Asked by Farooq Ahmad Shah 1st November 2015, 8:53 PM
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CBSE - XII Science - Chemistry - The Solid State

Lead sulphate crystals has NACL struclure.what is its density ?the edge length of PbS crystal is 500pm.
 
 
 
 
PLEASE SOLVE THIS NUMERICAL WITH HELP OF LOG TABLE AND ALSO EXPLAIN EACH STEP
WAITING FOR REPLY.

Asked by Shahwar 7th June 2015, 11:16 PM
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CBSE - XII Science - Chemistry - The Solid State

any other simple method for finding cube root of 3.86 x 10 raise to power 7

Asked by Farooq Ahmad Shah 3rd June 2015, 10:01 PM
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CBSE - XII Science - Chemistry - The Solid State

if molecular formulae is A2B then find the percentage of octahedral and tetrahedral voids if cations A are equally distributed between octahadral and tetrahedral voids and anions B are in CCP. kindly reply quick a request.

Asked by Farooq Ahmad Shah 1st June 2015, 8:15 PM
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CBSE - XII Science - Chemistry - The Solid State

SIR HOW DO WE COME TO KNOW THAT ALLUMINIUM HAS CUBIC CLOSED PACKED ARRANGEMENT OF ATOMS?

Asked by nevedithanaik23 29th April 2015, 6:42 PM
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CBSE - XII Science - Chemistry - The Solid State

How to get relation between r and R in calculating void space in terms of radius of anion cation in ionic compounds

Asked by srivastavaaman1998 1st April 2015, 10:19 PM
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CBSE - XII Science - Chemistry - The Solid State

which voids are formed in cubic close packing in 3 dimension.
and how to find cubic root.
 

Asked by Seema Jain 29th March 2015, 5:13 PM
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CBSE - XII Science - Chemistry - The Solid State

which void is the smallest void??

Asked by Potam Mahesh 30th July 2014, 10:20 PM
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CBSE - XII Science - Chemistry - The Solid State

How to determine the co-ordination no. ?

Asked by Kalyanrao Chavan 28th July 2014, 11:48 AM
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CBSE - XII Science - Chemistry - The Solid State

How to find the coordination number of FCC ? Explain ?

Asked by Nazar Pb 30th June 2014, 2:05 PM
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CBSE - XII Science - Chemistry - The Solid State

In which method can we calculate the co-ordination number of NaCl ?Explain ?

Asked by Nazar Pb 27th June 2014, 1:59 PM
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CBSE - XII Science - Chemistry - The Solid State

In corundum oxide, ions are arranged in HCP array and the aluminum ions occupy two-thirds of octahedral voids. What is the formula of corundum?

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

What is co-ordination number?

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

What is the percentage of space occupied by the spheres in hexagonal close packing in two dimensions?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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