7S Elements in Periodic Table

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Table 4703a. 7s elements in periodic table.

1S 2s 3s 4s 5s 6s 7s 2p 3p 4p 5p 6p 3d 3d 4d 5d 6d 4f 5f Elements Structure of the periodic table

Table 4703b. Electron configurations, filling orbitals, and valence electrons of 7s elements.

Atomic Number	Symbol	Name	Electron Configuration	Filling Orbital	Valence Electrons
87	Fr	Francium	1s² 2s²p⁶ 3s²p⁶d¹⁰ 4s²p⁶d¹⁰f¹⁴ 5s²p⁶d¹⁰ 6s²p⁶ 7s¹	7s¹	7s¹
88	Ra	Radium	1s² 2s²p⁶ 3s²p⁶d¹⁰ 4s²p⁶d¹⁰f¹⁴ 5s²p⁶d¹⁰ 6s²p⁶ 7s²	7s²	7s²

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