What charge should be present on this combination of atoms to produce the most stable molecule or ion possible

Question

Consider a hypothetical species "HeH". What charge, if any, should be present on this combination of atoms to produce the most stable or ion possible?

1. None of these
2. -.5
3. +.5
4. -1
5. +1

If the charge on this species were increased or decreased by one, what would be the effect on the bond order in the molecule?

Choices: increase by .5, increase by 2, increase by 1, decrease by 1, decrease by .5

Which of the following species possesses a delocalized bond?

1. No molecule here
2. NO3-
3. NCl3
4. H2S
5. H2O

Answer 1

+1, decrease by 0.5, (NO3)-