Input interpretation
helium | isotopes
Results
Stable
He-4 (99.999863%) | He-3 (1.37×10^-6)
Unstable
He-6 (806.7 ms) | He-8 (119 ms) | He-9 (7 zs) | He-7 (3.04 zs) | He-10 (1.52 zs) | He-5 (0.76 zs)