What property do all of the group 18 elements have that makes them stand out from other elements?
Answer (1)
The defining property of all group 18 elements, also known as noble gases, is their high stability and low reactivity due to their filled valence electron shells. This makes them stand out from other elements that readily participate in chemical reactions to achieve a stable electronic configuration. Here's a more detailed explanation: Filled Valence Shells:Group 18 elements, with the exception of helium (which has a full "duplet"), have a complete octet (eight valence electrons) in their outermost shell. This full shell provides them with extreme stability and minimizes their tendency to gain, lose, or share electrons with other atoms.Unreactivity:Because they are already stable in their atomic form, they are generally unreactive and do not readily form compounds with other elements under normal conditions.Noble Gases:This unreactivity is the reason why these elements are called "noble gases," akin to how noble metals are unreactive.Exceptional Stability:The full valence shell and resulting stability make group 18 elements very resistant to chemical reactions, even under extreme conditions.
