Question

select the correct answer. the periodic table houses noble gas elements in group 18. these elements are highly stable and rarely react with any other elements. what is one possible reason for the stability of the noble gas elements? a. they easily form covalent bonds. b. the compounds that they form with other elements are very unstable. c. their outermost shell has the maximum number of electrons that it can hold. d. they require less activation energy.

Explanation:

Noble gases are stable because their outermost electron - shell is full, having the maximum number of electrons it can hold. Covalent bond formation is not their characteristic of stability, the compounds they form (though rare) can be stable under certain conditions, and they don't have low activation energy as a reason for their general stability.

Answer:

C. Their outermost shell has the maximum number of electrons that it can hold.