Question

31 why are the noble gases the most unreactive group of elements on the periodic table?
a because they think theyre better than all other elements
b because their inner shells are not filled
c because they are all solids at room temperature
d because their outer shells are filled

Explanation:

Noble gases are unreactive because their outer - electron shells are full, making them stable and less likely to gain, lose, or share electrons to form chemical bonds.

Answer:

D. Because their outer shells are filled