Question $24($Mandatory$)(1$ point$)$

The hole in a close$-$packed crystal structure that is generally of larger size and has a coordination number of $6$ is called a$/$an hole.

A

The hole in a cluse$-$packed cystal structure that is generally of smaller size and has a coordination number of $4$ is called a$/$an hole.

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An alloy that is made when another type of atom replaces some atoms in the crystal structure is called a$/$an

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alloy