Copernicium should be a dense metal, with a density of 14.0 g/cm in the liquid state at 300 K; this is similar to the known density of mercury, which is 13.534 g/cm. (Solid copernicium at the same temperature should have a higher density of 14.7 g/cm.) This results from the effects of copernicium's higher atomic weight being cancelled out by its larger interatomic distances compared to mercury. Some calculations predicted copernicium to be a gas at room temperature due to its closed-shell electron configuration, which would make it the first gaseous metal in the periodic table. A 2019 calculation agrees with these predictions on the role of relativistic effects, suggesting that copernicium will be a volatile liquid bound by dispersion forces under standard conditions. Its melting point is estimated at 283 ± 11 K and its boiling point at 340 ± 10 K, the latter in agreement with the experimentally estimated value of 357 +112 −108 K. The atomic radius of copernicium is expected to be around 147 pm. Due to the relativistic stabilization of the 7s orbital and destabilization of the 6d orbital, the Cn and Cn ions are predicted to give up 6d electrons instead of 7s electrons, which is the opposite of the behavior of its lighter homologues.