If the density of iron be 7.76 gm/cc and it form body centred cubic lattice then find its side length. A wt of Fe 56.

Find the relation between side length and radius of atom form body centred cubic lattice and also find the packing efficiency for the same pacing.

Calculate the density of chromium if the side length of the unit cell is 290pm & forms body centred cubic lattice. (at wt of Cr is 52)

The radius of chromium atom is 1.25Å . If it crystallises in body centred cubic lattice, calculate the length of the edge of the unit cell.

What is the atomic weight of the element that forms. Face centred cubic lattice having edge length 400pm and density 208gm/cc?

Copper form face centred cubic lattice with side length 362 pm. Calculate its density (Cu=63.55).

Calculate the edge length of body centred cubic lattice having density 9.4 g.cm^(-3) and atomic weight 56.

The element chromium crystallises in a body centred cubic lattice whose density is 7.20g//cm^(3) . The length of the edge of the unit cell is 288.4 pm. Calculate Avogadro's number (Atomic mas of Cr = 52).

A metal, under different sets of conditions, can crystallise in a face-centred cubic (fcc) structure with a unit cell edge length of 3.5Å and in a body-centered cubic (bcc) structure with a unit cell edge length of 3.0Å . Find the ratio of the densities of fcc and bcc structures.

If the length of a chord of a circle is 48 cm and the distance of this chord from the centre is 7 cm , then find the length of the chord , the distance of which form the centre is 20 cm.

An element (density=7.2 g cm^(-3) crystallises in a body centred cubic structure its unit cell edge length 2.88 overset@A . Calculate the number of atoms and the number of unit, cells present in 156 g of the element.