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This article is about a set of undiscovered elements. Once they are discovered, this article will be edited with more information.

Period 9 is a hypothetical period starting from unhexennium through biunoctium. If period 8 is complete, there will probably be a ninth period.

List of elementsEdit

Period 9 elements
9 165
Uhp
166
Uhh
167
Uhs
168
Uho
169
Uhe
170
Usn
171
Usu
172
Usb
Alkali metal Alkaline earth metal Lanthanide Actinide Superactinide Eka-superactinide Transition metal Post-transition metal Metalloid Other nonmetal Halogen Noble gas
predicted predicted predicted predicted predicted predicted predicted predicted predicted predicted

Note: All the elements in this period are hypothetical. See more in the extended periodic table.