The answer is: the highest melting point has 2) rhenium.
Melting point of rhenium (symbol: Re) is 3180°C.
Melting point of tantalum (symbol: Ta) is 3020°C.
Melting point of osmium (symbol: Os) is 3030°C.
Melting point of hafnium (symbol: Hf) is 2230°C.
Rhenium is a chemical element with atomic number 75.
Rhenium is a silvery-gray, heavy, third-row transition metal in group 7 of the periodic table.
