[UltimateTheory (OP)]

How to find decay mode or decay energy of unstable isotope/element?

I have made Android application for it (not special privileges needed):
https://play.google.com/store/apps/details?id=eu.trueart.www.decayenergycalculator

You have to enter Z, proton quantity, atomic number.

Then there will be showed info about the element that has been selected,
with information like name of element (f.e. Hydrogen), shortcut of element (f.e. Pb),
and average molar mass/mass atomic unit of element,
and min-max Mass Number of available isotopes (there is built-in 3142 the largest in the world database of isotopes of the all 118 elements).
will be showed to user.

Then you have to enter Mass Number of isotope.
And more information will be revealed, like decay mode, decay energy, about isotope you selected.

For example Uranium 235 decay by alpha decay: