Advertisements
Advertisements
प्रश्न
How will you distinguish between the following pair of terms?
Crystal lattice and unit cell
Advertisements
उत्तर
| Crystal lattice | Unit cell |
| The three-dimensional arrangement of structural units or constituent particles (atoms, molecules or ions) in a crystal is called a space lattice or crystal lattice or simply a lattice. | Unit cell is the smallest three-dimensional group of lattice points which, when repeated in three dimensions in space, gives the whole lattice of the crystal. |
APPEARS IN
संबंधित प्रश्न
Describe triclinic crystal lattice with the help of a diagram.
What is the formula of a compound in which the element Y forms ccp lattice and atoms of X occupy 1/3rd of tetrahedral voids?
Which of the following parameters are correct for triclinic lattice?
(A) α = β = γ = 90° and a = b = c
(B) α ≠ β ≠ γ = 90° and a ≠ b ≠ c
(C) α = γ = 90°, β ≠ 90° and a ≠ b ≠ c
(D) α ≠ β ≠ γ ≠ 90° and a ≠ b ≠ c
For a crystal of sodium chloride, state the type of lattice in which it crystallises.
Complete the following statement by selecting the correct alternative from the choices given:
In a face-centered cubic lattice, atom (A) occupies the comer positions and atom (B) occupies the face centre positions. If one atom of (B) is missing from one of the face-centered points, the formula of the compound is:
In a solid atom M occupies ccp lattice and `(1/3)` of tetrahedral voids are occupied by atom N. find the formula of solid formed by M and N.
Why ionic crystals are hard and brittle?
How many three-dimensional crystal lattices are possible?
AB crystallises in a body centred cubic lattice with edge length' a' equal to 387 pm The distance between two oppositely charged ions in the lattice is:
How many unit cells are present in a cube-shaped ideal crystal of NaCl of mass 1.00 g? [Atomic masses: Na = 23, Cl = 35.5]
