XeNON.
Because there is no oxygen and they'd die from UV radiation, you idiot.
The chemist may frown.
Pupil: Fire Earth Water and the Internet. Teacher: What do you mean the Internet Pupil: Well Mum says that whenever I'm on the Net I'm in my element.
They lack the element of supplies
You get Solar Morty and WOOOoooooo!
An eternally suffering abomination...YOU MONSTER!
Daytrogen.
Barium, Cobalt and Nitrogen.