Which statement best explains why radon and krypton do not bond easily with other elements?

a. they have many electron shells, so their protons do not attract electrons strongly.

b. they have eight electrons in their valence shells, so they are stable without gaining or losing electrons.

c. their valence shells are empty, so they do not need to bond with other elements to be more stable.

d. their valence shells are so close to the protons in the nucleus that bonding cannot happen like in other elements.

B. They have eight electrons in their valence shells, so they are stable without gaining or losing electrons

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.