Xe is the most reactive noble gas

The most reactive noble gas element is

Which is the most abundant noble gas ?

Which is the most abundant noble gas?

The first ionisation energy (IE_1) and second ionisation energy (IE_2) of elements X, Y and Z are given below. Which one of the above elements is the most reactive metal, the least reactive metal and a noble gas?

What could be the reason for the less reactivity of noble gases?