Which statement concerning any homonuclear diatomic molecule and its 1- ion must be true?
a) X₂ must be more stable than X₂⁻.
b) X₂ must be less stable than X₂⁻.
c) X₂⁻ must be paramagnetic and X₂ must be diamagnetic.
d) X₂⁻ must be paramagnetic and X₂ may be paramagnetic or diamagnetic.