Advertisements
Advertisements
प्रश्न
Sodium metal crystallizes in bcc structure with the edge length of the unit cell 4.3 × 10−8 cm. calculate the radius of a sodium atom.
Advertisements
उत्तर
Edge length of the unit cell (a) = 4.3 × 10−8 cm
Radius of sodium atom (r) = ?
For bcc structure, r = `sqrt3/4 "a"`
= `sqrt3/4 (4.3 xx 10^-8 "cm")`
= `(1.732 xx 4.3 xx 10^-8)/4`
= `1.732/4 xx 10^-8 "cm"`
= 1.86 × 10−8 cm
= 1.86 Å
APPEARS IN
संबंधित प्रश्न
The vacant space in bcc lattice unit cell is ____________.
The radius of an atom is 300 pm, if it crystallizes in a face centered cubic lattice, the length of the edge of the unit cell is ____________.
The fraction of total volume occupied by the atoms in a simple cubic is
If ‘a’ stands for the edge length of the cubic system; sc, bcc, and fcc. Then the ratio of radii of spheres in these systems will be respectively.
Explain briefly seven types of unit cells.
Calculate the number of atoms in a fcc unit cell.
What is the coordination number of atoms in a bcc structure?
An element has bcc structure with a cell edge of 288 pm. The density of the element is 7.2 g cm−3. How many atoms are present in 208 g of the element?
KF crystallizes in fcc structure like sodium chloride. calculate the distance between K+ and F− in KF.
(Given: density of KF is 2.48 g cm−3)
Atoms X and Y form bcc crystalline structure. Atom X is present at the corners of the cube and Y is at the centre of the cube. What is the formula of the compound?
