scale in person membrane have complete outer proton short on the periodic desk of public & helium / neon / argon / krypton / xenon / radon belongs to noble gases family , group 18 on the periodic table ->  helium, neon, argon, krypton, xenon, and radon have complete outer electron shells  helium, neon, argon, krypton, xenon, and radon have complete outer electron shells & if the outermost proton society of an eve is complete, then the theory of those fragrance will not react with other patterns easily -> helium, neon, argon, krypton, xenon, and radon will not react with other elements easily