Concept:Rare gases are chemically stable because their outermost electron shell is completely filled, giving them a stable octet configuration.
Explanation:Atoms tend to be stable when their valence shell is full.
Rare gases like neon, argon, and krypton have eight valence electrons in their outermost shell.
Helium is an exception because it has only two electrons, which completely fills its first shell.
This complete octet arrangement makes them highly unreactive.
They do not need to gain, lose, or share electrons to achieve stability.
Thus, the statement "contain more electrons than protons" is false because atoms are electrically neutral.
The correct reason is that rare gases possess octet structures.
Answer:D. have octet structures