Question
In NaCl crystal each Cl– ion is surrounded by:
In NaCl crystal each Cl– ion is surrounded by:
- 4Na+ ions.
- 6Na+ions.
- 1Na+ ions.
- 2Na+ions.
Hint:
The number of atoms surrounding a particular atom is determined by the help of a coordination number.
The correct answer is: 6Na+ions.
- In the NaCl crystal, each chlorine ion is surrounded by six sodium ions.
- Sodium chloride is an octahedral crystal. The coordination number is the number that determines that a particular atom is surrounded by how many other atoms. In the case of NaCl, the coordination number is 6.
- This suggests, that each chlorine ion is surrounded by 6 sodium ions and each sodium ion is surrounded by 6 chlorine ions.
The stochiometry of NaCl crystal is 1:1.
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