How many 'nearest' and 'next nearest' neighbours respectively does sodium have in f.c.c. lattice

Options

A. 8,8
B. 12,6
C. 6,9
D. 8,2

Explanation

To determine the number of 'nearest' and 'next nearest' neighbors that sodium has in a face-centered cubic (FCC) lattice, we can follow these steps:

### Step 1: Understand the FCC Lattice Structure
In a face-centered cubic (FCC) lattice, atoms are located at each of the corners of the cube and at the centers of each face of the cube.

### Step 2: Identify Nearest Neighbors
The nearest neighbors of an atom in an FCC lattice are the atoms that are closest to it. For an atom located at a corner of the FCC unit cell, the nearest neighbors are the atoms located at the centers of the adjacent faces.

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