Cn
Interactive Shell Diagram

Copernicium Bohr Model, Electron Shell Diagram

Visualize the exact electron shell distribution of Copernicium (Cn). Its 112 total electrons orbit the microscopic nucleus across 7 quantum energy shells in the specific mathematical pattern 2 – 8 – 18 – 32 – 32 – 18 – 2.

Atomic Number: Z = 112Symbol: CnShells: 7Shell Pattern: 2-8-18-32-32-18-2Valence e⁻: 12

Live Bohr Shell Diagram

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Shell Distribution:2 – 8 – 18 – 32 – 32 – 18 – 2

Copernicium Nuclear Composition

Protons, neutrons, and electrons at a glance

Protons

112

Positive charge carriers in the nucleus

Neutrons

173

Neutral mass carriers in the nucleus

Electrons

112

Across 7 shells: 2-8-18-32-32-18-2

Detailed Bohr Model Analysis

Copernicium's traditional Bohr model diagram provides a spectacular two-dimensional blueprint of its subatomic structure. By plotting its 112 negatively charged electrons rotating around a positively charged nucleus (containing 112 protons and approximately 173 neutrons), we can visually decrypt its chemical properties.

Across its 7 electron shells, Copernicium distributes its electrons in the following exact hierarchical sequence, from the innermost ring outward: 2 – 8 – 18 – 32 – 32 – 18 – 2.

Applying the Bohr Rules to Copernicium

The Bohr model, introduced by Niels Bohr in 1913, radically changed our understanding of atomic structure by proposing that electrons orbit the nucleus in strictly quantized circular energy levels (or 'shells'). For Copernicium, we apply the 2n² rule, which states that the maximum electron capacity of any given shell is determined by two times the shell number (n) squared.

In the case of Copernicium, its 112 total electrons stack outward from the nucleus. The innermost K-shell (n=1) holds 2 electrons. The L-shell (n=2) holds 8. This stacking continues geometrically until we map the entire 2 – 8 – 18 – 32 – 32 – 18 – 2 sequence. Because Copernicium is a high-mass transuranic or deep-period element, its inner shells are packed with immense density—holding up to 32 electrons in a single shell. This massive inner core creates a powerful electrostatic shield, severely shielding the outermost electrons from the nucleus and introducing complex relativistic contraction.

The Role of Copernicium's Valence Electrons

When analyzing the Bohr model of Copernicium, the absolute most critical ring is the outermost shell. This layer holds exactly 12 valence electrons.

In chemistry, the core electrons (the inner rings) are chemically inert. They do not participate in bonding. All chemical reactivity, covalent sharing, and ionic transfers are conducted exclusively by the valence electrons. Because Copernicium has 12 valence electrons, it inherently seeks to achieve a stable "octet" (a full outer shell of 8 electrons, or 2 for lightweight elements). Holding exactly 4 valence electrons gives Copernicium unmatched chemical flexibility, allowing it to covalently share electrons in massive, complex macromolecular networks.

Bohr Shell Rules (Quick Reference)

  • 2n² Rule: Shell n holds a maximum of 2n² electrons.
  • Octet Rule: The outermost (valence) shell holds a max of 8 electrons for chemical stability.
  • Aufbau Order: Electrons fill from innermost shell outward.
  • Valence = Reactivity: The electrons in the last shell dictate how the element bonds.

Chemical & Physical Overview

The element Copernicium, represented universally by the chemical symbol Cn, holds the atomic number 112. This means that a standard neutral atom of Copernicium possesses exactly 112 protons within its dense nucleus, orbited precisely by 112 electrons. With a standard atomic weight of approximately 285.000 atomic mass units (u), Copernicium is classified fundamentally as a post-transition metal.

From a periodic standpoint, Copernicium resides in Period 7 and Group 12 of the periodic table, placing it firmly within the d-block. The overarching category of an element—whether it behaves as an alkali metal, a halogen, a noble gas, or a transition metal—is determined exclusively by how these electrons fill the available quantum shells.

Diving deeper into its physical footprint, Copernicium exhibits a calculated atomic radius of 122 picometers (pm). When attempting to physically remove an electron from its outermost shell, it requires a primary ionization energy of an undetermined amount of eV. Furthermore, its tendency to attract shared electrons in a covalent chemical bond—known as its electronegativity—measures at no measurable electronegativity (typical of perfectly stable noble gases). These specific subatomic metrics (radius, ionization, and electron affinity) combine to define exactly how Copernicium interacts, bonds, and reacts with every other chemical element in the observable universe.

Atomic Properties — Copernicium

Atomic Mass

285 u

Electronegativity

0 (Pauling)

Block / Group

D-block, Group 12

Period

Period 7

Atomic Radius

122 pm

Ionization Energy

N/A

Electron Affinity

0 eV

Category

Post-Transition Metal

Oxidation States

+4+20

Real-World Applications

Relativistic Chemistry Model ElementNoble Metal / Noble Gas Boundary ResearchSuperheavy Element Volatility StudiesNuclear PhysicsTheoretical Chemistry Benchmark

Real-World Applications & Industrial Uses

The distinct electronic structure of Copernicium directly empowers its functionality in the physical world. Its specific combination of atomic radius, electron affinity, and valence shell configuration makes it absolutely indispensable across modern industry, biological systems, and advanced technology.

Here are the primary real-world applications of Copernicium:

  • Relativistic Chemistry Model Element: Its baseline chemical reactivity makes it specifically suited for this primary role.
  • Noble Metal / Noble Gas Boundary Research: Used heavily in advanced manufacturing and chemical processing.
  • Superheavy Element Volatility Studies
  • Nuclear Physics
  • Theoretical Chemistry Benchmark

    Without the specific quantum mechanics occurring microscopically within Copernicium's electron cloud, these macroscopic technologies and biological processes would fundamentally fail to operate.

  • Did You Know?

    Named after Nicolaus Copernicus. Copernicium's most remarkable predicted property: due to extraordinary relativistic contraction of the 7s orbital, Cn-285 (half-life 29 s) may behave as a noble-gas-like element at room temperature, potentially being a gas or very volatile metal — more like radon than mercury. Experimental evidence tentatively supports high volatility.

    Shell-by-Shell Capacity Table

    How each of Copernicium's 7 shells compare to their theoretical maximum

    ShellSymbolElectrons (This Element)Max Capacity (2n²)Fill %
    1K (n=1)22
    100%
    2L (n=2)88
    100%
    3M (n=3)1818
    100%
    4N (n=4)3232
    100%
    5O (n=5)3250
    64%
    6P (n=6)1872
    25%
    7Q (n=7)298
    2%

    Shell Comparison: Copernicium vs Neighbors

    ← Previous Element

    Rg

    Roentgenium

    Z=111

    2-8-18-32-32-18-1 shells

    View Bohr Model

    ⬤ Current

    Cn

    Copernicium

    Z=112

    2-8-18-32-32-18-2 shells

    Next Element →

    Nh

    Nihonium

    Z=113

    2-8-18-32-32-18-3 shells

    View Bohr Model

    Frequently Asked Questions — Copernicium Bohr Model

    Authoritative References

    The atomic and structural data for Copernicium provided on this page has been cross-referenced with primary chemical databases. For further primary-source research, consult the following global authorities:

    Bohr Models for All 118 Elements

    Toni Tuyishimire — Principal Software Engineer, Toni Tech Solution
    Technical AuthorFact CheckedLast Reviewed: April 2026

    Toni Tuyishimire

    Principal Software EngineerScience & EdTech Systems

    Toni is specialized in high-performance computational tools and complex STEM visualizations. Through Toni Tech Solution, he architects scientifically accurate, deterministic software systems designed to educate and empower global digital audiences.