The lowest boiling point of helium is due to its a) Inertness b) Gaseous nature c) Weak van der Waals force between atoms d) electronic configuration

Which of the following statement is false? a) Radon is obtained from the decay of radium b) Helium is an inert gas c) Xenon is the most reactive among the rare gases d) The most abundant rare gas found in the atmosphere is helium