Lutetium-177 is an ideal therapeutic radioisotope because it is a strong β emitter and emits just enough γ radiation to enable imaging. What is the stable daughter nuclide produced from the decay of this radioisotope?

They are all decomposition reactions.

The answer is 4 i don't know if its right let me see.

Deposition  is  change of state has the wrong energy change listed 

Answer:             1.0  × 10⁻⁵ msolution:                     as we know ph is given as,                                    ph  = -log [h⁺]and,                                    [h⁺]  =  10^-ph    (1)putting value of ph in eq. 1,                                    [h⁺]  =  10⁻⁵                                    [h⁺]  =  1.0  × 10⁻⁵ m