The main facts about Radon

Radon

Radon is in group 18 in block p, it's a noble gas. Radon is a chemical element with the symbol Rn, atomic number 86, and atomic mass of 222.0176 units.

There are 87 protons, 136 neutrons, and 87 electrons. Radon's melting point is -71.0 C and it's boiling point is -61.8 C. The density of this gas is 9.73 grams per cubic centimeters.

Electron configuration: Xe 4f14 5d10 6s2 6p6