A hypothetical (atomic weight = 400) depending on temperature crystallizes in FCC and BCC stuctures. The ratio of densities in FCC and BCC is

A metal crystallizes in bcc lattice. The percent fraction of edge length not covered by atom is

A metal can be crystallized in both BCC and FCC unit cells whose edge lengths are 2 pm and 4 pm respectively. Then ratio of densities of FCC and BCC unit cells is

The radius of an atom is 100 pm. If this element crystallizes in FCC lattice, the edge length of unit cell is

If the total number of atoms per unit cell in an hcp structure and a bcc structure gets halved, then ratio of percentage voids in hcp and bcc structures is

The atomic radius of an ion which crystallizes in fcc structure is 9/7 Å. Calculate the lattice constant.

A metal crystallizes into two cubic phases BCC and FCC. The ratio of densities of FCC and BCC is equal to 1.5. Calculate the difference between the unit cell lengths of the FCC and BCC crystals if the edge length of the FCC crystal is equal to 4.0 Å.

Element X crystallizes in 12 co - ordination fcc lattice. On applyng high temperature it changes to bcc lattice. Find the ratio of the density of the crystal lattice before and and after applying high temperature

If an atom crystallizes in bcc lattice with r=4 Å then the edge length will be

Iron exhibits bcc structure at roomj temperature. Above 900^(@)C , it transformers to fcc structure. The ratio of density of iron at room temperature to that at 900^(@)C (assuming molar mass and atomic radius of iron remains constant with temperature) is

Iron exhibits bcc structure at roomj temperature. Above 900^(@)C , it transformers to fcc structure. The ratio of density of iron at room temperature to that at 900^(@)C (assuming molar mass and atomic radius of iron remains constant with temperature) is