Answer:
Radon 222.
Explanation:
This is a chemically inert gas that is colourless and odourless but it is radioactive. It is produced by uranium in rock. From seeping through foundation, its accumulation can cause lung cancer. Also, as a radioactive gas, it can be also used to in hospitals to cure ailments which includes tumour , cancer and other diseases.
The
correct option from given options is "b".<span>
Monosaccharides are also known as Simple sugars.
Two main categories of sugars are monosaccharides and
disaccharides. Fructose, glucose, and ribose are included
in monosaccharides. Glucose is a kind of sugar in monosaccharides that is known
as the blood sugar.</span>
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