In a given period, group 18 elements will have the highest atomic number.
Group 2
ununoctium
Flourine
Nitrogen has the highest first Ionization potential.
Element 92 Uranium
Carbon has the highest melting point of any element on the Periodic Table. It's melting point is 3823K
Fluor: 4,1 (Paulings scale)
Hydrogen and Carbon
Least to highest
Plutonium (atomic number 94) is the last element in the periodic table that may be found naturally, in trace amounts.
Osmium (Os): 22,59 g/cm3
period blood