The electronic configuration of the outermost shell of inert gases is:

Which is the last element of the noble gas group?

Which element out of $He$,$Ar$,$Kr$,and $Xe$ forms the least number of compounds?

Which of the following does not exist?

Identify the molecules having the same number of lone pairs on $Xe$ in the following molecules:
$(i) XeO_3$ $(ii) XeOF_4$ $(iii) XeF_6$

In noble gases,the addition of successive electronic shells leads to a decrease in their ........ .