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Standard XII
Chemistry
Fullerenes
29.The edge l...
Question
29.The edge length of unit cell of a diamond is 356.7pm. The C-C bond length in diamond, assuming them to the spheres in contact is what?
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Similar questions
Q.
The side length of diamond unit cell is (in pm):
Q.
The edge length of the unit cell of KCl (fcc) is
6.28
˚
A
. Assuming anion-cation contact along the cell edge, calculate the radius (in
˚
A
) of the potassium ion.
[
r
C
l
−
=
1.8
˚
A
]
Q.
The closest distance between two atoms (in terms of edge length) would be highest for which of the unit cell, assuming the edge length of each unit cell to be 'a'?
Q.
If a diamond has a face-centered cubic structure with two atoms per lattice point and a unit cell of the edge of
3.569
˚
A
. The density (in g cm
−
3
) of the diamond is :
Q.
Select the correct statement(s) about cubic structure of diamond.
1. Effective number of atoms present in a diamond cubic cell is
8
.
2. Each carbon is surrounded by four more carbon atoms.
3. Atomic radius of carbon is
√
3
×
a
8
, where a is edge length of cube.
4. Approximate packing fraction of unit cell is
√
3
×
π
16
.
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