Æium

is a mythical element with atomic number 2991 and symbol Æi. was created by Pium mutating and going through triple-outer-delta collapse and expelling the explosive mass around the atom and the it started gaining mass until it reached an atomic weight of 10311 and a had a half-life of 1621 years,3 months,2 weeks, 3 days, 4 hours, 17 minutes, 6.526 seconds.