Question

Noble gases are inert because they have completed outer electron shells. Which of these elements isn't a noble gas?
Plz helppppp

Answer 1

Hey
the noble gases are the chemical element in group 18 of the periodic table. They are the most stable due to having the maximum number of valence electrons their outer shell can hold . ... This chemical series contains helium (HE) , neon (NE),argon (AR) ,krypton (KR) , xenon and randon (RN)


i hope its help you
mark branilest

Answer 2

Helium,Neon,Argon,krypton,Xenon,Rn