A regular three dimensional arrangement of identical points in space is called

A set of identical point within a crystal is called

The simplest unit of three dimensional arrangement of lattice points which sets the pattern for whole lattice is callled

The simplest unit of three dimensional arrangement of lattice points which sets the pattern for whole lattice is callled

What is the maximum radius of the circle which can be kept in a two dimensional arrangement of identical atoms if atoms have a radius of 200pm without distorting the arrangement?

______________solids are formed by the three-dimensional arrangements of cations and anions bound by strong coulombic (electrostatic) forces.

Explain ABCABC type of three dimensional arrangement.