The answer to this is D. The given description can be associated with group number 16 in the periodic table. This group is also known as chalcogens. There are a lot of people who are familiar with this group as the oxygen family.
It also contains different elements some of which people are very much familiar with and there are also some that people may hear for the first time. Also included in this group is the element polonium which is known for being radioactive. Take note that this group is composed of non-metals. All of the elements that can be found in this group are known to be very reactive.