Solid State Tes...

The percentage of empty space in body centered cubic arrangement is _______.

The lattice site in a pure crystal cannot be occupied by ______.

Number of tetrahedral void completely inside a BCC metallic crystal is:

If the ratio of coordination no. of $$A$$ to that $$B$$ is $$x:y$$, then the ratio of no. of atoms of $$A$$ to that no. of atoms of $$B$$ in unit cell is ___.

for a certain crystal system the relation between edge lengths (a, b, and c) is
a = b = c
The relation between axial angles $$\left( {\alpha ,\beta \,\,{\text{and}}\,\gamma } \right)$$ is $$\alpha  = \beta  = \gamma $$
The pair of crystal system for which above relation holds true is:

By X-ray diffraction it is found that nickel (at mass $$= 59 \,g \,mol^{-1}$$), crystallized with $$ccp$$. The edge length of the unit cell is $$3.52 \mathring{A}$$. If density of $$Ni$$ crystal is $$8.94 \,g/cm^3$$. Then value of Avogadro's number from the date is:

The unit cell cube length of $$LiCl$$ ($$NaCl$$ structure) is $$5.14\overset{o}{A}$$. Assuming anion-anion contact, calculate the ionic radius for chloride ion.

Copper has fcc crystal structural. Assuming an atomic radius of $$130$$ pm for copper atom. What is the edge length of the unit cell? $$(Cu=63.54)$$

A unit cell of sodium chloride has four formula units. The edge length of the unit cell is $$0.564$$ nm. What is the density of sodium chloride? $$[Na=23, Cl=35.5]$$

The ionic radius of $$Cl^-$$ ion is $$1.81A^0$$. The interionic distance of $$NaCl$$ and $$NaF$$ are $$2.79A^0$$ and $$2.31A^0$$ respectively. The ionic radius of $$F^-$$ ion will be: