Find out of 1st,2nd and 3rd coordination number for an atom located at the corner in a simple cubic unit cell

Explanation

To find the 1st, 2nd, and 3rd coordination numbers for an atom located at the corner of a simple cubic unit cell, we can follow these steps:

### Step 1: Understand the Simple Cubic Unit Cell
A simple cubic unit cell consists of atoms located at each of the eight corners of the cube. Each corner atom is shared by eight adjacent unit cells.

### Step 2: Identify the 1st Coordination Number
The 1st coordination number refers to the number of nearest neighboring atoms surrounding the atom at the corner. In a simple cubic structure, each corner atom has six nearest neighbors located at the centers of the faces adjacent to the corner atom.

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