Approximate Values of Kinetic Energy and Potential Energy

[Wakko]

Homework Statement

https://s2.lite.msu.edu/res/msu/perl_author/MI3/CH7/IMAGES/MI3_7P32.png
The figure shows a potential energy curve for the interaction of two neutral atoms. The two-atom system is in a vibrational state (i.e., a total energy state) indicated by the heavy solid horizontal line.
At r=r1, what are the approximate values of the kinetic energy K, the potential U, and the quantity K+U?

Homework Equations

Vibrational State = K + U

The Attempt at a Solution

I'm pretty sure that U = -1.2 (dotted line)
And the Vibrational State (bold line) or K + U = -0.4
Which I'd assume means that K = 0.8 but this is incorrect. I've looked at this inside out and cannot figure out what's wrong.

 

[haruspex]

Which I'd assume means that K = 0.8 .

Looks right to me.

 

[Wakko]

I see what my mistake was. I was putting my answer in J but they wanted it in eV.