Advertisements
Advertisements
Question
Choose the most correct answer.
A compound forms hcp structure. Number of octahedral and tetrahedral voids in 0.5 mole of substance is respectively _______.
Options
3.011 × 1023, 6.022 × 1023
6.022 × 1023, 3.011 × 1023
4.011 × 1023, 2.011 × 1023
6.011 × 1023, 12.022 × 1023
Advertisements
Solution
A compound forms hcp structure. Number of octahedral and tetrahedral voids in 0.5 mole of substance is respectively `bb(underline(3.011 xx 10^23, 6.022 xx 10^23))`.
Explanation:
No. of atoms in 0.5 mol = 0.5 × 6.022 × 1023
= 3.011 × 1023 atoms
No. of octahedral = No. of atoms
Voids = 3.011 × 1023
No. of tetrahedral voids = 2 × No. of atoms
= 2 × 3.011 × 1023
= 6.022 × 1023
APPEARS IN
RELATED QUESTIONS
How are tetrahedral and octahedral voids formed?
The number of tetrahedral voids are formed if the number of atoms in a crystal is N/2.
In hexagonal close packed (hep) structure, ____________ layer and ____________ layer have horizontal and vertical alignment.
A metal crystallizes in bcc lattice with edge length 4.48 Å. The radius of the metal atom is ___________ Å.
An element crystallises in a bee lattice with cell edge of 500 pm. The density of the element is 7.5 g cm-3. How many atoms are present in 300 g of metal?
The ratio of close-packed atoms to tetrahedral holes in cubic close packing is ____________.
A metallic element crystallises in simple cubic lattice. If edge length of the unit cell is 3Å, with density 8 g/cc, what is the number of unit cells in 100 g of the metal?
(Molar mass of metal = 108 g/mol)
Xenon crystallises in fcc lattice and the edge length of unit cell is 620 pm. What is the radius of Xe atom?
The coordination number of each sphere in bcc lattice is ____________.
In two dimensional AAAA type packing, the coordination number of each sphere is ____________.
The coordination number of Rh in the complex [Rh(NH3)3(SCN)3] is ____________.
Zinc forms hcp structure. What is the number of tetrahedral voids formed in 0.3 mol of it?
The atoms of element 'Y' form hexagonal close packing and the atoms of element X occupies `3/4` th portion of the number of tetrahedral voids. The formula of the compound formed by X and Y is ____________.
Zinc forms hcp structure. What is the number of octahedral voids formed in 0.2 mol of it?
What is the coordination number of cation in ionic compound if the type of hole occupied by cation is cubic?
What is the coordination number of cation in ionic compound if the type of hole occupied by cation is octahedral?
Aluminium crystallises in a cubic close-packed structure with a unit cell edge length of 353.6 pm. What is the radius of Al atom? How many unit cells are there in 1.00 cm3 of Al?
Percentages of free space in cubic close-packed structure and in the body-centered packed structure are respectively ______.
Which metal crystallises in a simple cubic structure?
Which among the following metals crystallise as a simple cube?
What is the coordination number of atoms in bcc crystal lattice?
How much vacant space is present in hep crystal lattice?
Predict the type of cubic lattice of a solid element having edge length of 400 pm and density is 6.25 g/ml.
(Atomic mass of element = 60)
A metallic crystal crystallizes into a lattice containing a sequence of layers AB AB AB......Any packing of spheres leaves out voids in the lattice. What percentage of volume of this lattice is empty space?
Calculate the volume occupied by a particle in a simple cubic unit cell if the volume of the unit cell is 5.5 × 10−22 cm3.
What is the minimum number of spheres required to develop an octahedral void?
