Period 7 element
Elements
(?) Prediction (*) Exception to the Madelung rule.

Period 7 element

Section Title: Elements
Table Section Text: (?) Prediction (*) Exception to the Madelung rule.

Chemical element	Chemical series	Electron configuration	Occurrence

87	Fr	Francium	Alkali metal	[Rn] 7s1	From decay

88	Ra	Radium	Alkaline earth metal	[Rn] 7s2	From decay

89	Ac	Actinium	Actinide	[Rn] 6d1 7s2	From decay

90	Th	Thorium	Actinide	[Rn] 6d2 7s2 (*)	Primordial

91	Pa	Protactinium	Actinide	[Rn] 5f2 6d1 7s2	From decay

92	U	Uranium	Actinide	[Rn] 5f3 6d1 7s2	Primordial

93	Np	Neptunium	Actinide	[Rn] 5f4 6d1 7s2	From decay

94	Pu	Plutonium	Actinide	[Rn] 5f6 7s2 (*)	From decay

95	Am	Americium	Actinide	[Rn] 5f7 7s2 (*)	Synthetic

96	Cm	Curium	Actinide	[Rn] 5f7 6d1 7s2	Synthetic

97	Bk	Berkelium	Actinide	[Rn] 5f9 7s2 (*)	Synthetic

98	Cf	Californium	Actinide	[Rn] 5f10 7s2 (*)	Synthetic

99	Es	Einsteinium	Actinide	[Rn] 5f11 7s2 (*)	Synthetic

100	Fm	Fermium	Actinide	[Rn] 5f12 7s2 (*)	Synthetic

101	Md	Mendelevium	Actinide	[Rn] 5f13 7s2 (*)	Synthetic

102	No	Nobelium	Actinide	[Rn] 5f14 7s2 (*)	Synthetic

103	Lr	Lawrencium	Actinide	[Rn] 5f14 7s2 7p1 (*)	Synthetic

104	Rf	Rutherfordium	Transition metal	[Rn] 5f14 6d2 7s2	Synthetic

105	Db	Dubnium	Transition metal	[Rn] 5f14 6d3 7s2	Synthetic

106	Sg	Seaborgium	Transition metal	[Rn] 5f14 6d4 7s2	Synthetic

107	Bh	Bohrium	Transition metal	[Rn] 5f14 6d5 7s2	Synthetic

108	Hs	Hassium	Transition metal	[Rn] 5f14 6d6 7s2	Synthetic

109	Mt	Meitnerium	Transition metal (?)	[Rn] 5f14 6d7 7s2 (?)	Synthetic

110	Ds	Darmstadtium	Transition metal (?)	[Rn] 5f14 6d8 7s2 (?)	Synthetic

111	Rg	Roentgenium	Transition metal (?)	[Rn] 5f14 6d9 7s2 (?)	Synthetic

112	Cn	Copernicium	Post-transition metal	[Rn] 5f14 6d10 7s2 (?)	Synthetic

113	Nh	Nihonium	Post-transition metal (?)	[Rn] 5f14 6d10 7s2 7p1 (?)	Synthetic

114	Fl	Flerovium	Post-transition metal (?)	[Rn] 5f14 6d10 7s2 7p2 (?)	Synthetic

115	Mc	Moscovium	Post-transition metal (?)	[Rn] 5f14 6d10 7s2 7p3 (?)	Synthetic

116	Lv	Livermorium	Post-transition metal (?)	[Rn] 5f14 6d10 7s2 7p4 (?)	Synthetic

117	Ts	Tennessine	Post-transition metal (?)	[Rn] 5f14 6d10 7s2 7p5 (?)	Synthetic

118	Og	Oganesson	Noble gas (?)	[Rn] 5f14 6d10 7s2 7p6 (?)	Synthetic

Sentence(s)

Period 7 elements have been discovered, up to oganesson (element 118).

final_sentence: Period 7 elements have been discovered, up to oganesson (element 118).