The Heavier Noble Gases Are More Reactive Than the Lighter

Multiple Choice

The heavier noble gases are more reactive than the lighter ones because ________.

A) the lighter noble gases exist as diatomic molecules
B) the lighter noble gases have complete octets
C) the heavier noble gases are more abundant
D) the heavier noble gases have low ionization energies relative to the lighter ones
E) the heavier noble gases have greater electron affinities