they are unreactive as they have a full outer shell of electrons
No, they are the least reactive gasses.
Not at all! they are not reactive
No. They are the least because their energy levels are full.
Noble gasses are least reactive of all the elements. So the least reactive element in the period 4 is Krypton. It is a noble gas with an atomic number of 36.
noble gases are least reactive
Non-reactive, along with all other noble gasses.
Inert gases
Well the halogen family is very reactive and the noble gasses are not reactive at all.
Noble gasses are not reactive. :)
Less reactive non metals are in the 18th group. They are noble gasses. From all the noble gasses, Xe is the only gas which forms compounds.
Noble gases are least reactive because they have a full shell
The external shell of electrons is full.