The radon isotopes 218Rn, 219Rn, 220Rn and 222Rn are natural isotopes.
The other isotopes are manmade.
See also the link below.
The radon isotopes 218Rn, 219Rn, 220Rn and 222Rn are natural isotopes. The other isotopes are manmade. See also the link below.
Manmade
manmade
we are all natural because we weren't made in a factory we were made natural.Things that are made in factorys are manmade we are not manmade we are natural. Katrina LaChance- Bermuda138
Radon is a natural radioactive gas.
natural
snowflakes are natural
NO it is natural!
No, the moon is a natural astronomical body that orbits the Earth. It is not manmade.
Natural
Radon is a natural radioactive gas.
Radon is a radioactive natural gas.