Q.Give the significance of a 'lattice point'.

Each lattice point in a crystal lattice denotes the position of a single constituent particle (atom, molecule or ion). The regular 3-D array of these points defines the crystal structure. …

Step 1 – Definition.

A crystal lattice is a regular three-dimensional arrangement of points in space, and each such point is a lattice point (or lattice site).

Step 2 – Significance.

Each lattice point represents one constituent particle of the solid — which may be an atom, a molecule or an ion, depending on the substance. Because the points are arranged in a definite, repeating pattern, they capture the ordered internal structure of the crystal; joining them shows the geometry of …

Recall the definition of a crystal lattice and state that each point stands for one constituent particle, so the …

• Saying a lattice point is always an atom; it can be an atom, ion or molecule.
• Confusing a lattice point with a unit cell (a unit cell is a repeating block, not a single particle). …