What is the Q-value of the β- decay of Ni-65?

[richphys]

Homework Statement

Using the atomic masses of ⁶⁵Ni and ⁶⁵Cu, calculate the Q-value of the β- decay of ⁶⁵Ni (in MeV).
Answer = c) 2.14 MeV

Homework Equations

⁶⁵Ni -> ⁶⁵Cu + e^-

The Attempt at a Solution

64.9308 -> 64.9277 + 0.0005485
Products - Reactants
-0.0025515 * 931.5 = 2.3767

My answer is in the same ball park but not correct. Are my equations correct?

 

[richphys]

edited

 

[Orodruin]

Please put units into your attempt.

 

[Orodruin]

Also, assuming your masses are in atomic mass units, you have used the wrong mass for Ni-65.