In the Miller indices from intercepts procedure, what is the final step?

• A. Move axis to the nearest plane
• B. Encase in parentheses
• C. Take reciprocal
• D. Multiply across by LCM

Answer: (B)

The final step is to present the resulting triplet as Miller indices by enclosing them in parentheses. After taking reciprocals of the intercepts and clearing fractions to obtain integers h, k, l, you write them as (hkl) to denote the plane. This parentheses notation is the standard way to indicate a plane, and it distinguishes planes from crystallographic directions, which use brackets. If any index is negative, you’d indicate that with a bar over the number, but the essential final action is to enclose the integers in parentheses.