All of the following share the same crystal structure except:

The coordination number of $Na^{+}$ in $NaCl$ is

In the rock salt structure,the number of formula units per unit cell is equal to

If the radius of an anion is double that of a cation,the coordination number of the cation and the type of hole occupied are respectively:

Which of the following metals has a $ccp$ crystal structure?

In the structure of a solid, $W$ atoms are located at the cube corners of the unit cell, $O$ atoms are located at the cube edges, and $Na$ atoms are at the cube centers. The formula of the compound is: