The three-dimensional graph of lattice points which sets the pattern for the whole lattice is called:

What type of lattice is found in potassium chloride crystal?

$SrO$ has a $NaCl$ structure. If the lattice constant $a = 0.514 \ nm$ and the ionic radius of $Sr^{2+} = 0.113 \ nm$,what is the radius of the $O^{2-}$ ion?

Maximum possible number of three-dimensional and two-dimensional lattices are respectively:

For which of the following substances will $a \ne b \ne c$ and $\alpha = \beta = \gamma = 90^o$ $NOT$ hold true?

For a simple cubic crystal,the edge length is expressed as: