Time-Energy Uncertainty relation

[chris_0101]

Homework Statement

So I have this homework question and the answer that was given to me to check the answer that I have does not match with my answer. The question I have to complete is shown below:

The answer given to me is D, 6.6eV

Homework Equations

$$\Delta$$t$$\Delta$$E = [STRIKE]h[/STRIKE]/2

Rearranged for $$\Delta$$E:

$$\Delta$$E = [STRIKE]h[/STRIKE]/2$$\Delta$$t

The Attempt at a Solution

When I attempt the question my answer is 65.8eV, approximately 66eV. This matches with selection c, which makes me believe that the answer given is incorrect and my method is correct.

If someone could clarify this uncertainty (no pun intended), that would be greatly appreciated.

Thanks

 

[CompuChip]

That method looks correct, and it also gives me 66 eV.
It would seem to me that the answer you were given is not right.

(Unintended pun duly noted).