Pa : density,_g/cm3 : 15.37 | [TABLECONTEXT] : formula : Pa | Pa : symmetry : tetragonal | Pa : color : silvery-gray | [TABLECONTEXT] : [title] : Protactinium | Pa : pearson_symbol : tI2
Protactinium is a silvery-gray element with tetragonal symmetry, with 15.37 g/cm3 density and a Pearson symbol of tl2.