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A unit cell consists of a cube in which ...

A unit cell consists of a cube in which there are A atoms at the corners and B atoms at the face centres. Two A atoms are missing from the two corners of the unit cell. What is the formula of the compound ?

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To determine the formula of the compound based on the given unit cell structure, we will follow these steps: ### Step 1: Identify the contribution of A atoms from the corners In a cube, there are 8 corners. Each corner atom contributes \( \frac{1}{8} \) of an atom to the unit cell. - Total contribution from corners = \( 8 \times \frac{1}{8} = 1 \) atom However, since 2 A atoms are missing from the corners, we need to adjust this calculation: ...
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