What are two ways in which an ion could be nade

Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

What does the cell nucleus do or, how does it function?