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(B) tetrahedral void is a type of interstitial space formed in a close-packed arrangement of spheres. To create a tetrahedral void,a minimum of $4$ sp

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$4$

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(B) tetrahedral void is a type of interstitial space formed in a close-packed arrangement of spheres. To create a tetrahedral void,a minimum of $4$ spheres are required. The void is formed in the empty space between these $4$ spheres when they are arranged in a tetrahedral geometry. In structures like $FCC$ (Face-Centered Cubic) or $HCP$ (Hexagonal Close-Packed),this void is created by the arrangement of $4$ spheres.

What is the minimum number of spheres required to develop a tetrahedral void?

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