Why is helium called a noble gasses element what is octet configuration how many electrons does an atom of nitrogen need to have a nobel gas configuration atomic no of n is 7 with full formula an ion has 6 electrons and 7 protons is it cation or proton explain

Why is helium called a noble gasses element what is octet configurat

1.	Why is helium called a noble gasses element what is octet configuration how many electrons does an atom of nitrogen need to have a nobel gas configuration atomic no of n is 7 with full formula an ion has 6 electrons and 7 protons is it cation or proton explain
Answer» EXPLANATION:Helium is called a noble gas because it's outer most shell is FULLY filled with ELECTRONS N require 3 more electrons to attain Noble gas configurationIt is called cation or PROTON because the sign of the net CHARGE is positive