Would Krypton (Kr), normally be expected to react and form compounds?
A Yes, because Krypton has 7 valence electrons, and a high electronegativity.
B No, because Krypton has 8 valence electrons, and no electronegativity.
C No, because Krypton has 8 valence electrons, and no ionization energy.
D Yes, because Krypton has 7 valence electrons, and a high ionization energy.