Advertisements
Advertisements
प्रश्न
A compound forms hexagonal close-packed structure. What is the total number of voids in 0.5 mol of it? How many of these are tetrahedral voids?
Advertisements
उत्तर
Number of close-packed particles = 0.5 × 6.022 × 1023 = 3.011 × 1023
Therefore, number of octahedral voids = 3.011 × 1023
And, number of tetrahedral voids = 2 × 3.011 × 1023 = 6.022 ×1023
Therefore, total number of voids = 3.011 × 1023 + 6.022 × 1023 = 9.033 × 1023
संबंधित प्रश्न
What is the two dimensional coordination number of a molecule in square close packed layer?
A compound is formed by two elements M and N. The element N forms ccp and atoms of M occupy 1/3rdof tetrahedral voids. What is the formula of the compound?
How many lattice points are there in one unit cell of the following lattice?
Face-centred cubic
Ferric oxide crystallises in a hexagonal close-packed array of oxide ions with two out of every three octahedral holes occupied by ferric ions. Derive the formula of the ferric oxide.
The coordination number of AB having rock salt geometry is ____________.
Hexagonal close packed arrangement of ions is described as ____________.
The arrangement ABC ABC.... is referred to as ____________.
With the help of a labelled diagram show that there are four octahedral voids per unit cell in a cubic close packed structure.
The octane number of Iso-octane is
The crystal system of a compound with unit cell dimensions a = 0.387, b = 0.387 and c = 0.504 nm and α = β = 90° and ϒ = 120° is
The packing efficiency of the two dimensional square unit cell shown below is:
A compound forms hexagonal close-packed structure. What is the total number of voids in 0.5 mol of it? How many of these are tetrahedral voids?
Co-ordination number of sodium ion Na+ in Nacl is:-
Which of the following is frenkal effect.
The right option for the number of tetrahedral and octahedral voids in the hexagonal primitive unit cell is ______.
The right options for the number of tetrahedral and octahedral voids in the hexagonal primitive unit cells is ______.
Ionic radii of cation A+ and anion B- are 102 and 181 pm respectively. These ions are allowed to crystallize into an ionic solid. This crystal has cubic close packing for B-. A+ is present in all octahedral voids. The edge length of the unit cell of the crystal AB is ______ pm. (Nearest integer)
