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Anakha ullas C/o o ullasan

Aug 15, 2015

#### An element has a BCC structure with a cell edge of 288pm.The density of the element is 7.2g/cm3.How many atoms are present in 208g of the element?



This answer has an image. Please click on the question to read more.

Sanalkumar S

Apr 26, 2015

#### What is the formula of a compound in which the element Y forms hcp lattice and atoms of X occupy 2/3rd of tetrahedral voids?



The number of tetrahedral voids formed is equal to twice the number of atoms of element Y. But only 2/3 of these tetrahedral voids are occupied by atoms of element X.

Rajesh joshi

Apr 12, 2015

#### Why is Frenkel defect found in AgCl ?



This answer has an image. Please click on the question to read more.

Sanalkumar S

Jun 12, 2015

#### Why do ancient glass turns milky?



Glass is an amorphous solids a...

Sunny Mathew

Apr 14, 2015

#### WHY IS FRENKEL DEFECT NOT FOUND IN PURE ALKALI METAL HALIDES?



Frenkel defect is not found in pure alkali metal halides. This is because of the larger size of the cations of the alkali metals, due to the large size the cations cannot fit into the interstitial sites.

...

Sanalkumar S

Jun 2, 2015

#### Under what conditions would quartz be converted to  glass?



Quartz can be converted into glass by heating and then rapid cooling.

Sanalkumar S

May 7, 2015

#### Schottky defect leads to lower the density of solids. why?



In schottky defect an equal number of cations...

Sanalkumar S

May 7, 2015

#### THE UNIT LATTICE OF A PARTICULAR CRYSTAL SYSTEM RESEMBLES A MATCHBOX IN SHAPE.NAME THE CRYSTAL SYSTEM AND EXPLAIN.



Orthorhombic system looks like a matchbox. Because, orthorhombic crystal ...

Sanalkumar S

Sep 28, 2015

#### calculate the distance between Na+ & Cl-  ions in NaCl crystal if its density is 2.165 g cm-3.(molar mass of NaCl+58.5 g mol-1.)



M is the molecular mass of NaCl crystal. And N is the Avogadro's number of atoms.
Since there are 2N ions in one gram molecule,
The mass associated with each ion = M/2N
pd3 = M/2N
...

Anurag Verma

Apr 20, 2014

#### About the coordination number i.e. Z values of the compounds.



Ans:  It will be 6.
As each Na+ ion is surrounded by 6 Cl- ions. 4 ions in the same plane and 1 above & 1 below the plane = 6.
Similarly each Cl- ion is s...

Anakha ullas C/o o ullasan

Aug 15, 2015

#### An element has a BCC structure with a cell edge of 288pm.The density of the element is 7.2g/cm3.How many atoms are present in 208g of the element?



This answer has an image. Please click on the question to read more.

Sanalkumar S

Apr 26, 2015

#### What is the formula of a compound in which the element Y forms hcp lattice and atoms of X occupy 2/3rd of tetrahedral voids?



The number of tetrahedral voids formed is equal to twice the number of atoms of element Y. But only 2/3 of these tetrahedral voids are occupied by atoms of element X.

Rajesh joshi

Apr 12, 2015

#### Why is Frenkel defect found in AgCl ?



This answer has an image. Please click on the question to read more.

Sanalkumar S

Jun 12, 2015

#### Why do ancient glass turns milky?



Glass is an amorphous solids a...

Sunny Mathew

Apr 14, 2015

#### WHY IS FRENKEL DEFECT NOT FOUND IN PURE ALKALI METAL HALIDES?



Frenkel defect is not found in pure alkali metal halides. This is because of the larger size of the cations of the alkali metals, due to the large size the cations cannot fit into the interstitial sites.

...

Sanalkumar S

Jun 2, 2015

#### Under what conditions would quartz be converted to  glass?



Quartz can be converted into glass by heating and then rapid cooling.

Sanalkumar S

May 7, 2015

#### Schottky defect leads to lower the density of solids. why?



In schottky defect an equal number of cations...

Sanalkumar S

May 7, 2015

#### THE UNIT LATTICE OF A PARTICULAR CRYSTAL SYSTEM RESEMBLES A MATCHBOX IN SHAPE.NAME THE CRYSTAL SYSTEM AND EXPLAIN.



Orthorhombic system looks like a matchbox. Because, orthorhombic crystal ...

Sanalkumar S

Sep 28, 2015

#### calculate the distance between Na+ & Cl-  ions in NaCl crystal if its density is 2.165 g cm-3.(molar mass of NaCl+58.5 g mol-1.)



M is the molecular mass of NaCl crystal. And N is the Avogadro's number of atoms.
Since there are 2N ions in one gram molecule,
The mass associated with each ion = M/2N
pd3 = M/2N
...

Anurag Verma

Apr 20, 2014

#### About the coordination number i.e. Z values of the compounds.



Ans:  It will be 6.
As each Na+ ion is surrounded by 6 Cl- ions. 4 ions in the same plane and 1 above & 1 below the plane = 6.
Similarly each Cl- ion is s...

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