第9周期元素

9周期元素是排列在元素周期表第九行的元素。

簡介

第根據元素周期律的推測，這一周期應該有50種元素，從169號到218號，其中171到188號是g區元素。這些元素中，尚未有一種被發現。然而IUPAC元素系統命名法已經給它們命了臨時名字。

元素表

原子序	元素符號	IUPAC命名	族	電子組態	電子殼層	備註
169	Uhe	Unhexennium	s	[Uho] 9s	2, 8, 18, 32, 50, 32, 18, 8, 1	電負度確定小於0.7。
170	Usn	Unseptnilium	s	[Uho] 9s	2, 8, 18, 32, 50, 32, 18, 8, 2
171	Usu	Unseptunium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 33, 18, 8, 2
172	Usb	Unseptbium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 34, 18, 8, 2
173	Ust	Unsepttrium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 35, 18, 8, 2
174	Usq	Unseptquadium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 36, 18, 8, 2
175	Usp	Unseptpentium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 37, 18, 8, 2
176	Ush	Unsepthexium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 38, 18, 8, 2
177	Uss	Unseptseptium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 39, 18, 8, 2
178	Uso	Unseptoctium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 40, 18, 8, 2
179	Use	Unseptennium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 41, 18, 8, 2
180	Uon	Unoctnilium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 42, 18, 8, 2
181	Uou	Unoctunium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 43, 18, 8, 2
182	Uob	Unoctbium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 44, 18, 8, 2
183	Uot	Unocttrium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 45, 18, 8, 2
184	Uoq	Unoctquadium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 46, 18, 8, 2
185	Uop	Unoctpentium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 48, 18, 8, 1
186	Uoh	Unocthexium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 48, 18, 8, 2
187	Uos	Unoctseptium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 50, 18, 8, 1
188	Uoo	Unoctoctium	g	[Uho] 6g9s	2, 8, 18, 32, 50, 50, 18, 8, 2
189	Uoe	Unoctennium	f	[Uho]6g7f9s	2, 8, 18, 32, 50, 50, 19, 8, 2
190	Uen	Unennilium	f	[Uho]6g7f9s	2, 8, 18, 32, 50, 50, 20, 8, 2
191	Ueu	Unennunium	f	[Uho]6g7f9s	2, 8, 18, 32, 50, 50, 21, 8, 2
192	Ueb	Unennbium	f	[Uho] 6g7f9s	2, 8, 18, 32, 50, 50, 22, 8, 2
193	Uet	Unenntrium	f	[Uho]6g7f9s	2, 8, 18, 32, 50, 50, 23, 8, 2
194	Ueq	Unennquadium	f	[Uho]6g7f9s	2, 8, 18, 32, 50, 50, 24, 8, 2
195	Uep	Unennpentium	f	[Uho]6g7f9s	2, 8, 18, 32, 50, 50, 25, 8, 2
196	Ueh	Unennhexium	f	[Uho]6g7f9s	2, 8, 18, 32, 50, 50, 26, 8, 2
197	Ues	Unennseptium	f	[Uho]6g7f9s	2, 8, 18, 32, 50, 50, 27, 8, 2
198	Ueo	Unennoctium	f	[Uho]6g7f9s	2, 8, 18, 32, 50, 50, 28, 8, 2
199	Uee	Unennennium	f	[Uho]6g7f9s	2, 8, 18, 32, 50, 50, 29, 8, 2
200	Bnn	Binilnilium	f	[Uho]6g7f9s	2, 8, 18, 32, 50, 50, 30, 8, 2
201	Bnu	Binilunium	f	[Uho]6g7f9s	2, 8, 18, 32, 50, 50, 32, 8, 1
202	Bnb	Binilbium	f	[Uho]6g7f9s	2, 8, 18, 32, 50, 50, 32, 8, 2
203	Bnt	Biniltrium	d	[Uho]6g7f8d9s	2, 8, 18, 32, 50, 50, 32, 9, 2
204	Bnq	Binilquadium	d	[Uho]6g7f8d9s	2, 8, 18, 32, 50, 50, 32, 10, 2
205	Bnp	Binilpentium	d	[Uho]6g7f8d9s	2, 8, 18, 32, 50, 50, 32, 11, 2
206	Bnh	Binilhexium	d	[Uho]6g7f8d9s	2, 8, 18, 32, 50, 50, 32, 12, 2
207	Bns	Binilseptium	d	[Uho]6g7f8d9s	2, 8, 18, 32, 50, 50, 32, 13, 2
208	Bno	Biniloctium	d	[Uho]6g7f8d9s	2, 8, 18, 32, 50, 50, 32, 14, 2
209	Bne	Binilennium	d	[Uho]6g7f8d9s	2, 8, 18, 32, 50, 50, 32, 15, 2
210	Bun	Biunnilium	d	[Uho]6g7f8d9s	2, 8, 18, 32, 50, 50, 32, 16, 2	原子序210可能為不違反目前理論之最大值。
211	Buu	Biununium	d	[Uho]6g7f8d9s	2, 8, 18, 32, 50, 50, 32, 18, 1
212	Bub	Biunbium	d	[Uho]6g7f8d9s	2, 8, 18, 32, 50, 50, 32, 18, 2
213	But	Biuntrium	p	[Uho]6g7f8d9s9p	2, 8, 18, 32, 50, 50, 32, 18, 3
214	Buq	Biunquadium	p	[Uho]6g7f8d9s9p	2, 8, 18, 32, 50, 50, 32, 18, 4
215	Bup	Biunpentium	p	[Uho]6g7f8d9s9p	2, 8, 18, 32, 50, 50, 32, 18, 5
216	Buh	Biunhexium	p	[Uho]6g7f8d9s9p	2, 8, 18, 32, 50, 50, 32, 18, 6
217	Bus	Biunseptium	p	[Uho]6g7f8d9s9p	2, 8, 18, 32, 50, 50, 32, 18, 7
218	Buo	Biunoctium	p	[Uho]6g7f8d9s9p	2, 8, 18, 32, 50, 50, 32, 18, 8

註：不具電荷的原子的原子序最大可達到173，而其後的元素必須以離子的形態存在，所以根據電子組態分區將變得毫無意義。