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A systematic study on the alpha decay half lives of various isotopes ofsuperheavy element \textit{Z} = 121 within the range 290 $\leq$ A $\leq$ 339 ispresented for the first time using Coulomb and proximity potential model fordeformed nuclei (CPPMDN). The calculated $\alpha$ decay half lives of theisotopes within our formalism match well with the values computed usingViola-Seaborg systematic, Universal curve of Poenaru et al., and the analyticalformula of Royer. In our study by comparing the $\alpha$ decay half lives withthe spontaneous fission half lives, we have predicted $2\alpha$ chain from$^{309, 311, 312}$121, $3\alpha$ chain from $^{310}$121 and $1\alpha$ chainfrom $^{313, 314}$121. Clearly our study shows that the isotopes of superheavyelement \textit{Z} = 121 within the mass range 309 $\leq$ A $\leq$ 314 willsurvive fission and can be synthesized and detected in the laboratory via alphadecay. We hope that our predictions will provide a new guide to futureexperiments.

Predictions on the alpha decay chains of superheavy nuclei with Z =121 within the range 290 $\leq$ A $\leq$ 339