Answer:
helium , krypton,xenon,radon, argon are noble gasses
This information is correct. This is because the order of classification is domain, kingdom, phylum, class, order, family, genus, species. Since class comes before family, the two organisms could be in the same class, but then when you specify further, they could be in different families.
Answer:
I am not 100% sure but I think it is 26.981538
Explanation: