Posted: Jun 29, 2011 10:04 am
by rainbow
atrasicarius wrote:
rainbow wrote:Thanks.
It would appear that Cu65 is lighter than Ni64+proton by 0.008Da. The reaction if it were possible - would be exothermic.

You're not taking the activation cost into account. Getting the two atoms to fuse will take more energy than it will produce. That's why no fusion reaction with a product heavier than iron can produce net energy.

There is no activation 'cost'. Whatever activation energy is required is returned as the products return to their ground state.
Overall if there is a loss of mass, there must be energy produced.