For example, the element symbol of magnesium is Mg, not MG. The periodic table arrangement allows us to look for patterns in elements' chemical and physical properties and predict how other ...

Tantalum is a metal in group VB of the periodic table with atomic number 73, an atomic weight of 180.95, and a density of 16.6 Mg/m 3. Its melting point is 2996 C, and it boils at 5425 C. In the solid ...