Question

What is coordination number? What are the coordination numbers of Na+ and CH ions in the crystal of NaCl ?
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Answer 1

Explanation:

Answer

(i) Coordination number is the number of nearest neighbors with which a given atom is in contact. In an ionic crystal, the coordination number of an ion refers to the number of oppositely charged ions that surround that ion.

(ii) The coordination number of atoms in a

(a) cubic close-packed structure is 12.

(b) body-centred cubic structure is 8.

Answer 2

Answer:

In NaCl crystal, each sodium ion is surrounded by 6 chloride ions and each chloride ion is surrounded by 6 ions.

so ,the coordination number of NaCl as per definition will be 6.6