Homework Question 1.37 6th Ed

[Phoebe Chen 4I]

I know that I am supposed to use De Broglie's Equation, however I am not sure how their wavelengths would be different if they have essentially the same values for momentum. With everything else being a constant value, wouldn't their wavelengths be the same? I've attached question 1.37 6th Edition.

[705192887]

This is just a guess, but maybe use the mass for the neutron as the mass from the isotope? That way, the two masses are slightly different and will have different wavelengths. For example, carbon has an atomic mass of 12.011. The proton weight would be 6, and the neutron weight would be 6.011. Maybe this is meant by the two weights?? Hope this helps!!

[Tam To 1B]

I think this question is meant to show that their wavelengths are basically going to be the same. Since they are so close in size, there is very little difference, so you can say they are almost identical.