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The radon isotopes 218Rn, 219Rn, 220Rn and 222Rn are natural isotopes.
The other isotopes are manmade.
See also the link below.
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Related Questions
Is radon naturally occurring?
The radon isotopes 218Rn, 219Rn, 220Rn and 222Rn are natural isotopes. The other isotopes are manmade. See also the link below.
Are the twin towers natural or manmade?
Manmade
Is rayon a natural fiber or manmade fiber?
manmade
Are humans manmade or natural?
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
How is radon found in its natural state?
Radon is a natural radioactive gas.
Is cradle mountain manmade or natural?
natural
Can snowflakes be natural or manmade?
snowflakes are natural
Is iron manmade?
NO it is natural!
Was the moon manmade?
No, the moon is a natural astronomical body that orbits the Earth. It is not manmade.
Is the hwang ho river manmade or natural?
Natural
What phase is radon found in?
Radon is a natural radioactive gas.
Is radon a transition metal or not?
Radon is a radioactive natural gas.
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