Question

which are the most stable elements?
What is their unique feature? write
electronic configuration of stable
element​

Answer 1

Answer:

Group 18 elements (helium, neon, and argon are shown in Figure 2) have a full outer, or valence, shell. A full valence shell is the most stable electron configuration. Elements in other groups have partially filled valence shells and gain or lose electrons to achieve a stable electron configuration.

Explanation:

mark answer as brainliest...

Answer 2

Answer:

Noble gases

Explanation:

All the 6 elements of the 18th group ( He, Ne, Ar, Kr, Xe, and Rd) are the most stable elements in the entire periodic table. They are also known as Noble gases.

Reason:

All of these elements have their valence shell completely filled. this is the reason why they rarely react with any element. and hence, are most stable.

General electron configuration of noble gases:  ns² np⁶

I hope this satisfies your question. Good luck buddy! ♥