How many ions occupy the second nearest?

The second nearest Co-ordination number of Na+ ions is 12.

How many nearest and next nearest Neighbours respectively does CL have in NaCl crystal lattice?

Answer is : (b) 6Cl-, 12Na Here, Na+ present at body centre touches six Cl- ions.

How many Cl ions are there around Na+ ion in NaCl crystal?

six chlorine ions
Because of this, each sodium ion, is surrounded by six chlorine ions, and each chlorine ion is surrounded by six sodium ions. A crystal builds up like this, giving the sodium chloride crystal a cubic structure. This cubic structure is reflected in the cubic shape of salt crystals.

Is NaCl fcc or BCC?

General Notes. NaCl has a cubic unit cell. It is best thought of as a face-centered cubic array of anions with an interpenetrating fcc cation lattice (or vice-versa).

What type of crystal structure is NaCl?

cubic unit cell
The Sodium Chloride Structure NaCl has a cubic unit cell. It is best thought of as a face-centered cubic array of anions with an interpenetrating fcc cation lattice (or vice-versa). The cell looks the same whether you start with anions or cations on the corners.

What are coordination numbers of Cl and Na+ ions respectively in sodium chloride crystal A 8 and 8 B 6 and 6 C 8 and 4 D 4 and 8?

In NaCl crystal, each sodium ion is surrounded by 6 chloride ions and each chloride ion is surrounded by 6 sodium ions. So, the coordination number of NaCl as per definition will be 6:6.

What is the nearest Neighbour distance between Na and Cl?

0.24 nm
(II) The spacing between “nearest neighbor” Na and Cl ions in a NaCl crystal is 0.24 nm.

How many effective Na and Cl ions are present?

So, there are four sodium ions in the unit cell of sodium chloride. We can understand from the above discussion that the required answer is 4 sodium cations and 4 chlorine anions are present in a unit cell of sodium chloride.