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?
O A. They easily form covalent bonds.
O B. The compounds that they form with other elements are very unstable.
O C. Their outermost shell has the maximum number of electrons that it can hold.
O D. They require less activation energy.

Answer 1

C

Step-by-step explanation:

Group 18 are highly stable because of the presence of octet or duplet configuration

the first shell of an atom can hold only 2 electrons and becomes stable once it is completely filled with 2

while the other shells can hold a maximum of 8 and become stable too when completely filled with 8 electrons

and group 18 have either only 2 electrons in the first shell (example:helium) or 8 in any other shell(argon,neon,krypton and so on)