A high result in radon testing (more than 4 pCi/L or pico Curies per liter) requires action. A mitigation system should be installed in the affected house.
If the seller refuses to pay for radon testing or mitigation, you may consider negotiating with them to split the cost or paying for it yourself to ensure the safety of the property. Alternatively, you could walk away from the deal if radon is a significant concern for you.
There are no elements in Radon, Radon is an element in its own right.
Radon is NOT reactive.
No. Radon is odorless.
Radon is odorless and poisonous.
Radon is a gas, no ductility.
Radon is a gas, no hardness.
The chemical symbol of radon is Rn.
No, not radon. Radon is known to cause lung cancer.
Radon testing lets you test for radon gas. Radon gas is harmful to your health and cause things such as cancer.
You need a radon detector to perform radon testing. Essentially it's a geiger counter. Radon is radioactive and you locate it just the same way. Many radon alarms are available for areas where Radon is a problem. You would need a radon detector for radon testing. You can purchase one from amazon.com for $130 shipped. http://www.amazon.com/dp/B000CEAY64
Radon is not an actinide, it is a noble gas.