Solid State
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An ionic compound (A+B-) crystallizes in rock salt structure. If the ionic radii of A+ and B- is 200pm and 400pm respectively, then calculate distance between nearest anions in Å.
An ionic compound (A+B-) crystallizes in rock salt structure. If the ionic radii of A+ and B- is 200pm and 400pm respectively, then calculate distance between nearest anions in Å.
Kindly go through the solution
Ans. (8.40 to 8.57)
Upvote 
The coordination number of an atom in a body- centred cubic structure is___________.
[Assume that the lattice is made up of atoms]
The coordination number of an atom in a body- centred cubic structure is___________.
[Assume that the lattice is made up of atoms]
Coordination no. of an atom in BCC is 8.
Upvote The distance between Na+ and Cl ions in solid NaCl of density 43.1g cm3 is ________×1010m. (Nearest Integer)
The distance between Na+ and Cl ions in solid NaCl of density 43.1g cm3 is ________×1010m. (Nearest Integer)
Percentage packing fraction of diamond is x (approximately), and the number of particle per unit cell is y. Then the value of x + y is
Percentage packing fraction of diamond is x (approximately), and the number of particle per unit cell is y. Then the value of x + y is
Percentage packing fraction of diamond is 34% and number of particle per unit cell is 8.
Upvote Hexagonal unit cell is made up by AB.AB . . . packing, then shortest distance between two identical layers (say AA) in a unit cell of edge length x, is
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Hexagonal unit cell is made up by AB.AB . . . packing, then shortest distance between two identical layers (say AA) in a unit cell of edge length x, is
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In hexagonal unit cell, the shortest distance between two identical layers is
(2√2x) / √3 [x = edge length]
h = (2√2x) / √3
Upvote In a solid AB, A atoms are in ccp arrangement and B atoms occupy all octahedral sites. If two atoms from the opposite face are removed, then the resultant stoichiometry of the compound is AxBy. The value of x is ___________(nearest integer)
In a solid AB, A atoms are in ccp arrangement and B atoms occupy all octahedral sites. If two atoms from the opposite face are removed, then the resultant stoichiometry of the compound is AxBy. The value of x is ___________(nearest integer)
After removal A = 4 -
After removal B = 4 – 1 = 4 (only two atoms are removed)
Final formula of the compound = A3B4
Upvote Select the correct statements.
(A) Crystalline solids have long range order.
(B) Crystalline solids are isotropic.
(C) Amorphous solids are sometimes called pseudo solids
(D) Amorphous solids soften over a range of temperatures.
(E) Amorphous solids have a definite heat of fusion
Choose the most appropriate answer from the options given below:
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Select the correct statements.
(A) Crystalline solids have long range order.
(B) Crystalline solids are isotropic.
(C) Amorphous solids are sometimes called pseudo solids
(D) Amorphous solids soften over a range of temperatures.
(E) Amorphous solids have a definite heat of fusion
Choose the most appropriate answer from the options given below:
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Characteristics of crystalline solids:-
Crystalline solid have long range order.
Crystalline solid are anisotropic in nature.
Crystalline solid have definite heat of fusion.
Characteristics of amorphous solids:-
Amorphous solids have short range of order.
Amorphous solids are sometimes called pseudo solid
Upvote Which amongst the following options is the correct relation between change in enthalpy and change in internal Energy?
Which amongst the following options is the correct relation between change in enthalpy and change in internal Energy?
Kindly go through the answer
ΔH = ΔU + Δn_gRT
Upvote Which amongst the following options is the correct relation between change in enthalpy and change in internal Energy?
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Which amongst the following options is the correct relation between change in enthalpy and change in internal Energy?
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Kindly go through the answers
? H =? U +? n_gRT
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