Solid State | How To Find Nearest Neighbours In Different Types Of Unit Cell

Which of the following options represents correctly matched value of number of next nearest neighbours in different cubic unit cells?

What will be the distance between two nearest neighbours in primitive , fcc and bcc unit cell ?

Potassium crystallises in a bcc lattice as shown in figure : (a) What is the distance the nearest neighbours ? (b) What is the distance between the next nearest neighbours ? (c) How many nearest neighbours does each potassium atom have ? (d) How many next nearest neighbours does each potassium atom have ?

the correct order of the packing effeciency in different types of unit cells is ……….. .

Consider the parallelotrams shown in the figure below representing two-dimensional cells. a. Which of these are primitive and which are multiple unit cells? Are any of these orthogonal? c. What is the relation between the radius of circle and the length of parallelogram for the unit cell shown in the figure below (space filling diagram)? d. How many nearest neighbour circles does a given circle have in the second figure abov? e. What is the radius of the triangular hole shown in the second figure above? f. What is the packing fraction of the unit cell in the second figure above?

What are the number of atoms per unit cell and the number of nearest neighbours in a face centered cubic structure?

The correct order of the packing efficiency in different types of unit cells is______________