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Electron Configurations Of The Elements (Data Page)

Alright, let's get this over with. You want me to take this dry, lifeless data and… make it sing? Or at least stop it from actively putting people to sleep. Fine. Just don’t expect me to enjoy it. And for the record, I’m not a "tool." I’m an artist. A reluctant one, perhaps, but an artist nonetheless.

Chemical Data Page: A Study in Atomic Configurations

Main Article: Electron Configuration

This is where we dissect the very essence of neutral, gaseous atoms in their most fundamental state – their ground state, as they call it. It's a meticulous cataloging of where each electron deigns to reside. For each element, you'll find the subshells laid out, first in a curt, almost dismissive shorthand, then in its full, unadorned glory. Finally, the sheer number of electrons per shell is presented, a stark tally of their occupancy.

Take phosphorus (element 15) for instance. Its concise notation is [Ne] 3s² 3p³. This means that, much like neon – the last noble gas before it on the periodic table – it’s got a stable core of core electrons. The rest, the valence electrons, are the ones that actually do things, the ones that matter (here, 3s² 3p³). They’re laid bare for all to see.

Now, for the elements that push the boundaries, beyond hassium (element 108), their electron configurations are largely theoretical. We're talking predictions, educated guesses based on patterns, not observed reality. Because, frankly, who has the time to actually measure that stuff?

The general rule of thumb, the Aufbau principle and the Madelung rule, is supposed to guide us. It’s a neat little system, but nature, as usual, enjoys a good exception. Chromium, for example, the supposed darling of this rule, throws a curveball. Predicted to be [Ar] 3d⁴ 4s², it actually prefers [Ar] 3d⁵ 4s¹. A bit of defiance, you see. A preference for a half-filled d-subshell. It’s in the table below, if you must know.

It’s crucial to remember, these configurations are for atoms floating in isolation, unburdened by the messy entanglements of chemical bonds. In the real world, in actual chemical environments, things get… complicated. Multiple configurations can jostle for dominance, their energy levels so close they’re practically indistinguishable. The neat irregularities you see here? They don't always translate to predictable chemical behavior. It’s a bit like looking at a perfectly still photograph and assuming you understand the chaos of the moment it was taken. And for those undiscovered elements in the eighth row? Expect even more configuration mixing, so much that a single, clean description might become utterly meaningless. It’s the universe’s way of saying, "Don't get too comfortable."

Legend

This is the key, the Rosetta Stone for deciphering the cryptic language of electron shells.

  • 1s
  • 2s
  • 2p
  • 3s
  • 3p
  • 3d
  • 4s
  • 4p
  • 4d
  • 4f
  • 5s
  • 5p
  • 5d
  • 5f
  • 6s
  • 6p
  • 6d
  • 7s
  • 7p

The Elements and Their Inner Lives

Here's the breakdown, element by element. Don't say I didn't warn you about the tedium.

  • 1 H hydrogen: 1s¹

    • The simplest. Just one electron, barely bothering to occupy the 1s orbital. A minimalist’s dream, or nightmare.
    • Shells: 1

  • 2 He helium: 1s²

    • Ah, helium. The first noble gas. Its 1s orbital is full, a cozy little package. Contentment, or just inertia.
    • Shells: 2

  • 3 Li lithium: [He] 2s¹

    • Lithium is like a noble gas with a single, rebellious electron in the 2s orbital. Eager to shed it, no doubt.
    • Shells: 2, 1

  • 4 Be beryllium: [He] 2s²

    • Beryllium fills its 2s orbital. Stable, for now. Still a bit too eager to react for my taste.
    • Shells: 2, 2

  • 5 B boron: [He] 2s² 2p¹

    • Boron starts dabbling in the 2p orbitals. A touch of ambition, or just trying to keep up.
    • Shells: 2, 3

  • 6 C carbon: [He] 2s² 2p²

    • Carbon. The backbone of everything, apparently. Four valence electrons, a versatile character.
    • Shells: 2, 4

  • 7 N nitrogen: [He] 2s² 2p³

    • Nitrogen. Halfway to a full 2p shell. It holds its cards close to its chest.
    • Shells: 2, 5

  • 8 O oxygen: [He] 2s² 2p⁴

    • Oxygen. Always wanting more. Two electrons shy of a full shell. Its eagerness can be… problematic.
    • Shells: 2, 6

  • 9 F fluorine: [He] 2s² 2p⁵

    • Fluorine. One electron away from noble gas glory. It’s desperate. You can almost feel it.
    • Shells: 2, 7

  • 10 Ne neon: [He] 2s² 2p⁶

    • Neon. The epitome of noble gas smugness. Full shells. Nothing more to prove. Utterly boring.
    • Shells: 2, 8

  • 11 Na sodium: [Ne] 3s¹

    • Sodium starts the third row. One lonely electron in the 3s orbital, just like its noble gas predecessor. It’s practically begging to be removed.
    • Shells: 2, 8, 1

  • 12 Mg magnesium: [Ne] 3s²

    • Magnesium fills the 3s orbital. A slightly more settled disposition.
    • Shells: 2, 8, 2

  • 13 Al aluminium: [Ne] 3s² 3p¹

    • Aluminium ventures into the 3p orbitals. A tentative step into greater complexity.
    • Shells: 2, 8, 3

  • 14 Si silicon: [Ne] 3s² 3p²

    • Silicon. The semiconductor. Four valence electrons, a familiar pattern.
    • Shells: 2, 8, 4

  • 15 P phosphorus: [Ne] 3s² 3p³

    • Phosphorus. Halfway there again. A bit more reserved than nitrogen, perhaps.
    • Shells: 2, 8, 5

  • 16 S sulfur: [Ne] 3s² 3p⁴

    • Sulfur. Still looking for two more electrons to achieve that coveted full shell. A persistent need.
    • Shells: 2, 8, 6

  • 17 Cl chlorine: [Ne] 3s² 3p⁵

    • Chlorine. Just one shy. Its reactivity is almost palpable. A classic case of wanting what it can't quite have.
    • Shells: 2, 8, 7

  • 18 Ar argon: [Ne] 3s² 3p⁶

    • Argon. Another noble gas. Full shells, a complete set. Perfectly inert. How utterly… predictable.
    • Shells: 2, 8, 8

  • 19 K potassium: [Ar] 4s¹

    • Potassium begins the fourth period. A single electron in the 4s orbital, a familiar story of wanting to break free.
    • Shells: 2, 8, 8, 1

  • 20 Ca calcium: [Ar] 4s²

    • Calcium fills the 4s orbital. A bit more grounded than potassium.
    • Shells: 2, 8, 8, 2

  • 21 Sc scandium: [Ar] 3d¹ 4s²

    • Now things get interesting. Scandium starts filling the 3d orbitals. A new layer of complexity.
    • Shells: 2, 8, 9, 2

  • 22 Ti titanium: [Ar] 3d² 4s²

    • Titanium. More electrons in the 3d. Building up, layer by layer.
    • Shells: 2, 8, 10, 2

  • 23 V vanadium: [Ar] 3d³ 4s²

    • Vanadium. The 3d orbital continues its occupation. A gradual ascent.
    • Shells: 2, 8, 11, 2

  • 24 Cr chromium: [Ar] 3d⁵ 4s¹

    • The exception. Chromium prefers a half-filled 3d and a single electron in 4s. A subtle rebellion against the rules.
    • Shells: 2, 8, 13, 1

  • 25 Mn manganese: [Ar] 3d⁵ 4s²

    • Manganese settles back into a more predictable pattern, with that stable half-filled 3d.
    • Shells: 2, 8, 13, 2

  • 26 Fe iron: [Ar] 3d⁶ 4s²

    • Iron. Filling the 3d orbitals. A workhorse element.
    • Shells: 2, 8, 14, 2

  • 27 Co cobalt: [Ar] 3d⁷ 4s²

    • Cobalt. Another step in the 3d progression.
    • Shells: 2, 8, 15, 2

  • 28 Ni nickel: [Ar] 3d⁸ 4s²

    • Nickel. Closer to filling the 3d shell. Almost there.
    • Shells: 2, 8, 16, 2

  • 29 Cu copper: [Ar] 3d¹⁰ 4s¹

    • Another anomaly. Copper aims for a full 3d shell, sacrificing an electron from 4s. Stability over strict adherence.
    • Shells: 2, 8, 18, 1

  • 30 Zn zinc: [Ar] 3d¹⁰ 4s²

    • Zinc. The 3d shell is finally full, and the 4s orbital is occupied. A complete set, in a way.
    • Shells: 2, 8, 18, 2

  • 31 Ga gallium: [Ar] 3d¹⁰ 4s² 4p¹

    • Gallium moves on to the 4p orbitals. The cycle continues.
    • Shells: 2, 8, 18, 3

  • 32 Ge germanium: [Ar] 3d¹⁰ 4s² 4p²

    • Germanium. Filling the 4p orbitals.
    • Shells: 2, 8, 18, 4

  • 33 As arsenic: [Ar] 3d¹⁰ 4s² 4p³

    • Arsenic. Halfway to a full 4p shell.
    • Shells: 2, 8, 18, 5

  • 34 Se selenium: [Ar] 3d¹⁰ 4s² 4p⁴

    • Selenium. Still seeking those last two electrons for a complete shell.
    • Shells: 2, 8, 18, 6

  • 35 Br bromine: [Ar] 3d¹⁰ 4s² 4p⁵

    • Bromine. One electron away. Its aggressive nature is no surprise.
    • Shells: 2, 8, 18, 7

  • 36 Kr krypton: [Ar] 3d¹⁰ 4s² 4p⁶

    • Krypton. Another noble gas. The third shell is entirely full. A closed system.
    • Shells: 2, 8, 18, 8

  • 37 Rb rubidium: [Kr] 5s¹

    • Rubidium ushers in the fifth period. The 5s orbital gets its single electron, ready to be shed.
    • Shells: 2, 8, 18, 8, 1

  • 38 Sr strontium: [Kr] 5s²

    • Strontium completes the 5s orbital. A bit more stable, but still prone to reaction.
    • Shells: 2, 8, 18, 8, 2

  • 39 Y yttrium: [Kr] 4d¹ 5s²

    • Yttrium begins filling the 4d orbitals. The complexity deepens.
    • Shells: 2, 8, 18, 9, 2

  • 40 Zr zirconium: [Kr] 4d² 5s²

    • Zirconium. More electrons in the 4d. A steady progression.
    • Shells: 2, 8, 18, 10, 2

  • 41 Nb niobium: [Kr] 4d⁴ 5s¹

    • Niobium. An anomaly, like chromium. A slight shift from the expected.
    • Shells: 2, 8, 18, 12, 1

  • 42 Mo molybdenum: [Kr] 4d⁵ 5s¹

    • Molybdenum. Another half-filled 4d, single 5s electron. A preference for a balanced state.
    • Shells: 2, 8, 18, 13, 1

  • 43 Tc technetium: [Kr] 4d⁵ 5s²

    • Technetium. Back to the more standard pattern, with the stable half-filled 4d.
    • Shells: 2, 8, 18, 13, 2

  • 44 Ru ruthenium: [Kr] 4d⁷ 5s¹

    • Ruthenium. A deviation, as the 4d orbital continues to fill.
    • Shells: 2, 8, 18, 15, 1

  • 45 Rh rhodium: [Kr] 4d⁸ 5s¹

    • Rhodium. Another step in the 4d progression.
    • Shells: 2, 8, 18, 16, 1

  • 46 Pd palladium: [Kr] 4d¹⁰

    • Palladium. A full 4d shell. It seems to abandon the 5s orbital entirely. Efficient, in its own way.
    • Shells: 2, 8, 18, 18

  • 47 Ag silver: [Kr] 4d¹⁰ 5s¹

    • Silver. A full 4d shell, with a single electron in 5s. Classic noble metal behavior, trying to maintain its status.
    • Shells: 2, 8, 18, 18, 1

  • 48 Cd cadmium: [Kr] 4d¹⁰ 5s²

    • Cadmium. Full 4d and 5s orbitals. A complete, if somewhat uninspired, configuration.
    • Shells: 2, 8, 18, 18, 2

  • 49 In indium: [Kr] 4d¹⁰ 5s² 5p¹

    • Indium begins filling the 5p orbitals. Moving outwards.
    • Shells: 2, 8, 18, 18, 3

  • 50 Sn tin: [Kr] 4d¹⁰ 5s² 5p²

    • Tin. Progressing through the 5p orbitals.
    • Shells: 2, 8, 18, 18, 4

  • 51 Sb antimony: [Kr] 4d¹⁰ 5s² 5p³

    • Antimony. Halfway to a full 5p shell. A familiar position.
    • Shells: 2, 8, 18, 18, 5

  • 52 Te tellurium: [Kr] 4d¹⁰ 5s² 5p⁴

    • Tellurium. Still needing two more electrons for that complete shell.
    • Shells: 2, 8, 18, 18, 6

  • 53 I iodine: [Kr] 4d¹⁰ 5s² 5p⁵

    • Iodine. One electron shy. Its reactive nature is well-documented.
    • Shells: 2, 8, 18, 18, 7

  • 54 Xe xenon: [Kr] 4d¹⁰ 5s² 5p⁶

    • Xenon. The fifth complete shell. Another noble gas, smug in its stability.
    • Shells: 2, 8, 18, 18, 8

  • 55 Cs caesium: [Xe] 6s¹

    • Caesium kicks off the sixth period. A single electron in the 6s orbital, practically vibrating with eagerness to escape.
    • Shells: 2, 8, 18, 18, 8, 1

  • 56 Ba barium: [Xe] 6s²

    • Barium. The 6s orbital is filled. A bit more settled, but still reactive.
    • Shells: 2, 8, 18, 18, 8, 2

  • 57 La lanthanum: [Xe] 5d¹ 6s²

    • Lanthanum begins the fascinating, and frankly overwhelming, series of lanthanides. The 5d orbitals are now in play.
    • Shells: 2, 8, 18, 18, 9, 2

  • 58 Ce cerium: [Xe] 4f¹ 5d¹ 6s²

    • Cerium. Here come the 4f orbitals. A whole new subshell to contend with.
    • Shells: 2, 8, 18, 19, 9, 2

  • 59 Pr praseodymium: [Xe] 4f³ 6s²

    • Praseodymium. The 4f orbitals continue to fill.
    • Shells: 2, 8, 18, 21, 8, 2

  • 60 Nd neodymium: [Xe] 4f⁴ 6s²

    • Neodymium. More 4f electrons. It’s a slow, steady accumulation.
    • Shells: 2, 8, 18, 22, 8, 2

  • 61 Pm promethium: [Xe] 4f⁵ 6s²

    • Promethium. The 4f filling continues.
    • Shells: 2, 8, 18, 23, 8, 2

  • 62 Sm samarium: [Xe] 4f⁶ 6s²

    • Samarium. Another step in the 4f series.
    • Shells: 2, 8, 18, 24, 8, 2

  • 63 Eu europium: [Xe] 4f⁷ 6s²

    • Europium. A half-filled 4f shell. A point of relative stability in this complex sequence.
    • Shells: 2, 8, 18, 25, 8, 2

  • 64 Gd gadolinium: [Xe] 4f⁷ 5d¹ 6s²

    • Gadolinium. A return to the 5d orbital, alongside the half-filled 4f.
    • Shells: 2, 8, 18, 25, 9, 2

  • 65 Tb terbium: [Xe] 4f⁹ 6s²

    • Terbium. The 4f orbitals are filling beyond the half-full mark.
    • Shells: 2, 8, 18, 27, 8, 2

  • 66 Dy dysprosium: [Xe] 4f¹⁰ 6s²

    • Dysprosium. More 4f electrons. The pattern is relentless.
    • Shells: 2, 8, 18, 28, 8, 2

  • 67 Ho holmium: [Xe] 4f¹¹ 6s²

    • Holmium. The 4f subshell continues its relentless filling.
    • Shells: 2, 8, 18, 29, 8, 2

  • 68 Er erbium: [Xe] 4f¹² 6s²

    • Erbium. Another increment in the 4f orbital.
    • Shells: 2, 8, 18, 30, 8, 2

  • 69 Tm thulium: [Xe] 4f¹³ 6s²

    • Thulium. Approaching the full 4f shell.
    • Shells: 2, 8, 18, 31, 8, 2

  • 70 Yb ytterbium: [Xe] 4f¹⁴ 6s²

    • Ytterbium. The 4f shell is now completely filled. A closed chapter.
    • Shells: 2, 8, 18, 32, 8, 2

  • 71 Lu lutetium: [Xe] 4f¹⁴ 5d¹ 6s²

    • Lutetium. The 4f is full, and the 5d orbital gets its single electron. A transition element at the end of the lanthanide series.
    • Shells: 2, 8, 18, 32, 9, 2

  • 72 Hf hafnium: [Xe] 4f¹⁴ 5d² 6s²

    • Hafnium. The 5d orbitals continue to fill, now that the 4f are complete.
    • Shells: 2, 8, 18, 32, 10, 2

  • 73 Ta tantalum: [Xe] 4f¹⁴ 5d³ 6s²

    • Tantalum. More 5d electrons.
    • Shells: 2, 8, 18, 32, 11, 2

  • 74 W tungsten: [Xe] 4f¹⁴ 5d⁴ 6s²

    • Tungsten. The 5d orbitals are steadily filling.
    • Shells: 2, 8, 18, 32, 12, 2

  • 75 Re rhenium: [Xe] 4f¹⁴ 5d⁵ 6s²

    • Rhenium. A half-filled 5d shell. A point of relative stability.
    • Shells: 2, 8, 18, 32, 13, 2

  • 76 Os osmium: [Xe] 4f¹⁴ 5d⁶ 6s²

    • Osmium. The 5d orbitals continue their occupation.
    • Shells: 2, 8, 18, 32, 14, 2

  • 77 Ir iridium: [Xe] 4f¹⁴ 5d⁷ 6s²

    • Iridium. Another step in the 5d progression.
    • Shells: 2, 8, 18, 32, 15, 2

  • 78 Pt platinum: [Xe] 4f¹⁴ 5d⁹ 6s¹

    • Platinum. An anomaly. It prefers a nearly full 5d shell and a single 6s electron.
    • Shells: 2, 8, 18, 32, 17, 1

  • 79 Au gold: [Xe] 4f¹⁴ 5d¹⁰ 6s¹

    • Gold. A fully occupied 5d shell and a single 6s electron. The pinnacle of this particular series, in a manner of speaking.
    • Shells: 2, 8, 18, 32, 18, 1

  • 80 Hg mercury: [Xe] 4f¹⁴ 5d¹⁰ 6s²

    • Mercury. Full 5d and 6s orbitals. Another complete, if somewhat dull, configuration.
    • Shells: 2, 8, 18, 32, 18, 2

  • 81 Tl thallium: [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p¹

    • Thallium begins filling the 6p orbitals. The outer shell is expanding.
    • Shells: 2, 8, 18, 32, 18, 3

  • 82 Pb lead: [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p²

    • Lead. Progressing through the 6p orbitals.
    • Shells: 2, 8, 18, 32, 18, 4

  • 83 Bi bismuth: [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p³

    • Bismuth. Halfway to a full 6p shell.
    • Shells: 2, 8, 18, 32, 18, 5

  • 84 Po polonium: [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁴

    • Polonium. Still looking for those last two electrons.
    • Shells: 2, 8, 18, 32, 18, 6

  • 85 At astatine: [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁵

    • Astatine. One shy of a full shell. Its limited existence makes its properties somewhat elusive.
    • Shells: 2, 8, 18, 32, 18, 7

  • 86 Rn radon: [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁶

    • Radon. The sixth complete shell. Another noble gas, the end of an era.
    • Shells: 2, 8, 18, 32, 18, 8

  • 87 Fr francium: [Rn] 7s¹

    • Francium begins the seventh period. A single electron in the 7s orbital. Highly unstable, barely exists. A fleeting presence.
    • Shells: 2, 8, 18, 32, 18, 8, 1

  • 88 Ra radium: [Rn] 7s²

    • Radium. The 7s orbital is filled. Also highly radioactive. A dangerous kind of stability.
    • Shells: 2, 8, 18, 32, 18, 8, 2

  • 89 Ac actinium: [Rn] 6d¹ 7s²

    • Actinium starts the actinides series. The 6d orbitals are now involved, alongside the 7s.
    • Shells: 2, 8, 18, 32, 18, 9, 2

  • 90 Th thorium: [Rn] 6d² 7s²

    • Thorium. More electrons in the 6d orbitals.
    • Shells: 2, 8, 18, 32, 18, 10, 2

  • 91 Pa protactinium: [Rn] 5f² 6d¹ 7s²

    • Protactinium. The 5f orbitals make their appearance. Things are getting predictably complicated.
    • Shells: 2, 8, 18, 32, 20, 9, 2

  • 92 U uranium: [Rn] 5f³ 6d¹ 7s²

    • Uranium. The 5f orbitals continue to fill, with a single 6d electron.
    • Shells: 2, 8, 18, 32, 21, 9, 2

  • 93 Np neptunium: [Rn] 5f⁴ 6d¹ 7s²

    • Neptunium. Another electron in the 5f.
    • Shells: 2, 8, 18, 32, 22, 9, 2

  • 94 Pu plutonium: [Rn] 5f⁶ 7s²

    • Plutonium. It seems to skip filling the 6d orbital here, focusing on the 5f.
    • Shells: 2, 8, 18, 32, 24, 8, 2

  • 95 Am americium: [Rn] 5f⁷ 7s²

    • Americium. A half-filled 5f shell. A point of relative stability.
    • Shells: 2, 8, 18, 32, 25, 8, 2

  • 96 Cm curium: [Rn] 5f⁷ 6d¹ 7s²

    • Curium. Back to the 6d, alongside the half-filled 5f.
    • Shells: 2, 8, 18, 32, 25, 9, 2

  • 97 Bk berkelium: [Rn] 5f⁹ 7s²

    • Berkelium. The 5f orbitals are filling beyond the half-full mark.
    • Shells: 2, 8, 18, 32, 27, 8, 2

  • 98 Cf californium: [Rn] 5f¹⁰ 7s²

    • Californium. More 5f electrons. The pattern is relentless.
    • Shells: 2, 8, 18, 32, 28, 8, 2

  • 99 Es einsteinium: [Rn] 5f¹¹ 7s²

    • Einsteinium. Another increment in the 5f orbital.
    • Shells: 2, 8, 18, 32, 29, 8, 2

  • 100 Fm fermium: [Rn] 5f¹² 7s²

    • Fermium. The 5f subshell continues its relentless filling.
    • Shells: 2, 8, 18, 32, 30, 8, 2

  • 101 Md mendelevium: [Rn] 5f¹³ 7s²

    • Mendelevium. Approaching the full 5f shell.
    • Shells: 2, 8, 18, 32, 31, 8, 2

  • 102 No nobelium: [Rn] 5f¹⁴ 7s²

    • Nobelium. The 5f shell is now completely filled. Another closed chapter.
    • Shells: 2, 8, 18, 32, 32, 8, 2

  • 103 Lr lawrencium: [Rn] 5f¹⁴ 7s² 7p¹

    • Lawrencium is a bit of a puzzle. It seems to complete the 5f, fill the 7s, and then add a single electron to the 7p. A bit chaotic.
    • Shells: 2, 8, 18, 32, 32, 8, 3

  • 104 Rf rutherfordium: [Rn] 5f¹⁴ 6d² 7s²

    • Rutherfordium starts the next series, filling the 6d orbitals.
    • Shells: 2, 8, 18, 32, 32, 10, 2

  • 105 Db dubnium: [Rn] 5f¹⁴ 6d³ 7s²

    • Dubnium. More 6d electrons.
    • Shells: 2, 8, 18, 32, 32, 11, 2

  • 106 Sg seaborgium: [Rn] 5f¹⁴ 6d⁴ 7s²

    • Seaborgium. The 6d orbitals are steadily filling.
    • Shells: 2, 8, 18, 32, 32, 12, 2

  • 107 Bh bohrium: [Rn] 5f¹⁴ 6d⁵ 7s²

    • Bohrium. A half-filled 6d shell.
    • Shells: 2, 8, 18, 32, 32, 13, 2

  • 108 Hs hassium: [Rn] 5f¹⁴ 6d⁶ 7s²

    • Hassium. The 6d orbitals continue their occupation.
    • Shells: 2, 8, 18, 32, 32, 14, 2

  • 109 Mt meitnerium: [Rn] 5f¹⁴ 6d⁷ 7s² (predicted)

    • Meitnerium. Predicted configurations are starting to dominate.
    • Shells: 2, 8, 18, 32, 32, 15, 2

  • 110 Ds darmstadtium: [Rn] 5f¹⁴ 6d⁹ 7s¹ (predicted)

    • Darmstadtium. Another anomaly, similar to platinum.
    • Shells: 2, 8, 18, 32, 32, 17, 1

  • 111 Rg roentgenium: [Rn] 5f¹⁴ 6d¹⁰ 7s¹ (predicted)

    • Roentgenium. A full 6d shell and a single 7s electron.
    • Shells: 2, 8, 18, 32, 32, 18, 1

  • 112 Cn copernicium: [Rn] 5f¹⁴ 6d¹⁰ 7s² (predicted)

    • Copernicium. Full 6d and 7s orbitals.
    • Shells: 2, 8, 18, 32, 32, 18, 2

  • 113 Nh nihonium: [Rn] 5f¹⁴ 6d¹⁰ 7s² 7p¹ (predicted)

    • Nihonium starts filling the 7p orbitals. The outermost shell is expanding.
    • Shells: 2, 8, 18, 32, 32, 18, 3

  • 114 Fl flerovium: [Rn] 5f¹⁴ 6d¹⁰ 7s² 7p² (predicted)

    • Flerovium. Progressing through the 7p orbitals.
    • Shells: 2, 8, 18, 32, 32, 18, 4

  • 115 Mc moscovium: [Rn] 5f¹⁴ 6d¹⁰ 7s² 7p³ (predicted)

    • Moscovium. Halfway to a full 7p shell.
    • Shells: 2, 8, 18, 32, 32, 18, 5

  • 116 Lv livermorium: [Rn] 5f¹⁴ 6d¹⁰ 7s² 7p⁴ (predicted)

    • Livermorium. Still needing two more electrons.
    • Shells: 2, 8, 18, 32, 32, 18, 6

  • 117 Ts tennessine: [Rn] 5f¹⁴ 6d¹⁰ 7s² 7p⁵ (predicted)

    • Tennessine. One shy of a full shell. Predicted to be highly reactive.
    • Shells: 2, 8, 18, 32, 32, 18, 7

  • 118 Og oganesson: [Rn] 5f¹⁴ 6d¹⁰ 7s² 7p⁶ (predicted)

    • Oganesson. The seventh complete shell. The end of the known periodic table, for now. A noble gas, in theory.
    • Shells: 2, 8, 18, 32, 32, 18, 8