Which of the following is a characteristic of Radon?

Radon is known for being an odorless and colorless gas that naturally occurs as a result of the radioactive decay of uranium in soil and rock. This characteristic makes it particularly hazardous because individuals cannot detect its presence without the use of specialized equipment. Because it is not visible or detectable by smell, residents may be exposed to radon without knowing, increasing the risk of long-term health issues such as lung cancer with prolonged exposure.

The qualities of being brightly colored, having a sweet smell, or being a liquid at room temperature are not forms or characteristics associated with radon, affirming that the property of being odorless and colorless accurately describes this gas. Understanding this fundamental characteristic is crucial for awareness and mitigation in environments where radon levels may be a concern, such as basements or poorly ventilated homes.