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{:(,"Column - I",,"Column - II"),((A),"C...

`{:(,"Column - I",,"Column - II"),((A),"Coordination number",(p),"FCC"),((B),"9 places of symmetry.",(q),"Line passing through centres of two diagonal opposite edges"),((C ),"2 fold axis of symmetry",(r ),"Decrease with increase in temperature"),((D),"Coordination number = 12",(s),"SCC"):}`

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To solve the matching question between Column - I and Column - II, we will analyze each item in Column - I and find the corresponding item in Column - II. ### Step-by-Step Solution: 1. **Coordination Number (A)**: - The coordination number is defined as the number of atoms immediately surrounding a central atom in a crystal structure. - In the case of an FCC (Face-Centered Cubic) structure, the coordination number is 12. - Therefore, **A matches with (D) Coordination number = 12**. ...
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