JAMB - Chemistry (2023 - No. 2)
Which noble gas is radioactive and is produced as a decay product of uranium and thorium?
Argon
Krypton
Radon
Neon
解释
Radon is a radioactive noble gas and is produced as a decay product of uranium and thorium in the Earth's crust. It is colorless, odorless, and tasteless, making it potentially hazardous when it accumulates in enclosed spaces.