"Grunff" wrote in message
...
Jeff wrote:

Radon is a naturally occuring gas (the heaviest) and is inert
Tritium is a naturally occuring isotope of hydrogen and is not inert -
it
will readily combine with oxygen to form a liquid

And?

so imho its not a very good comparison as radon is a noble gas and tritium
is a transitional isotope that will mainly be found as a liquid

Regards Jeff