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Only those atoms which four covalent bon...

Only those atoms which four covalent bonds produce a repetitive three dimesional structure using only covalent bonds., e.g. , diamond structure.The latter is based on a FCC lattice where lattice points are occupied by carbon atoms.Every atom in this structure is surrounded tetrahedrally by four others.Germanium, silicon and grey tin also crystallize in the same way as diamond. (Given :`N_A=6xx10^(23) sin 54^@44'=0.8164`)
If the edge length is `3.60Å`, density of diamond crystal is

A

`6.0xx10^21`

B

`6.0xx10^22`

C

`7.5xx10^21`

D

`5.0xx10^22`

Text Solution

Verified by Experts

The correct Answer is:
C
Total number of unit cells`=(1.2xxN_A)/(12xx8)=7.5xx10^(21)`
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Only those atoms which four covalent bonds produce a repetitive three dimesional structure using only covalent bonds., e.g. , diamond structure.The latter is based on a FCC lattice where lattice points are occupied by carbon atoms.Every atom in this structure is surrounded tetrahedrally by four others.Germanium, silicon and grey tin also crystallize in the same way as diamond. (Given : N_A=6xx10^(23) sin 54^@44'=0.8164 ) If edge length of the cube is 3.60Å , then radius of carbon atom is

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In diamond structure ,carbon atoms form fcc lattic and 50% tetrahedral voids occupied by acrbon atoms . Evergy carbon atoms is surrounded tetrachedral by four carbon atom with bond length 154 pm . Germanium , silicon and grey tin also crystallise in same way as diamond (N_(A)=6xx 10^(23)) The mass of diamond unit cell is:

In diamond structure ,carbon atoms form fcc lattic and 50% tetrahedral voids occupied by acrbon atoms . Evergy carbon atoms is surrounded tetrachedral by four carbon atom with bond length 154 pm . Germanium , silicon and tin also crystallise in same way as diamond (N_(A)=6xx 10^(23)) The side length of diamond unit cell is ("in pm") :

In diamond structure ,carbon atoms form fcc lattic and 50% tetrahedral voids occupied by acrbon atoms . Evergy carbon atoms is surrounded tetrachedral by four carbon atom with bond length 154 pm . Germanium , silicon and grey tin also crystallise in same way as diamond (N_(A)=6xx 10^(23)) The side length of diamond unit cell (in pm): a. 154 b. 1422.63 c. 711.32 d. 355.66

Percentage of tetrahedral voids occupied by carbon atoms per unit cell of diamond is

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In a diamond, each carbon atom is bonded to four other carbon atoms tetrahedrally. Alternate tetrahedral voids are occupied by carbon atoms. The number of carbon atoms per unit cell is:

Diamond is hard because all the four valence electrons are bonded to four carbon atoms by comvlent bonds .

Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g., hydrogen. After the formation of four bonds, carbon attains the electronic configuration of

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