The table below shows some information about four different elements.
Element 
Classification 
Density (g/cm³) 
barium (Ba) 
metal 
3.6 
beryllium (Be) 
metal 
1.8 
chromium Cr) 
metal 
7.2 
phosphorus P) 
nonmetal 
1.8 
A cube of an unknown element has a shiny, silvery color. The side of the cube measures 2.0 cm and the cube has a mass of 14.56 g.
Based on the information in the table, which element makes up the cube?
barium 
beryllium 
chromium 
phosphorus