Which of the following groups contain three elements with stable electron configurations?
a. lithium, krypton, argon
b. argon, neon, barium
c. xenon, neon, boron
d. helium, xenon, neon

The correct option is: d. helium, xenon, neon

Explanation:

In the periodic table, the chemical elements belonging to the group 18 are called the inert gases or noble gases.

The noble gases have stable electronic configuration, as they have completely filled valence electron shells. Thus the noble gases have very low reactivity.

The noble gases are helium, neon, argon, krypton, xenon, and radon.

Therefore, the group having elements with stable electron configurations is d. helium, xenon, neon.

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