Hs
Interactive Shell Diagram

Hassium Bohr Model, Electron Shell Diagram

Visualize the exact electron shell distribution of Hassium (Hs). Its 108 total electrons orbit the microscopic nucleus across 7 quantum energy shells in the specific mathematical pattern 2 – 8 – 18 – 32 – 32 – 14 – 2.

Atomic Number: Z = 108Symbol: HsShells: 7Shell Pattern: 2-8-18-32-32-14-2Valence e⁻: 8

Live Bohr Shell Diagram

Loading Shell Animator...

Shell Distribution:2 – 8 – 18 – 32 – 32 – 14 – 2

Hassium Nuclear Composition

Protons, neutrons, and electrons at a glance

Protons

108

Positive charge carriers in the nucleus

Neutrons

161

Neutral mass carriers in the nucleus

Electrons

108

Across 7 shells: 2-8-18-32-32-14-2

Detailed Bohr Model Analysis

Hassium's traditional Bohr model diagram provides a spectacular two-dimensional blueprint of its subatomic structure. By plotting its 108 negatively charged electrons rotating around a positively charged nucleus (containing 108 protons and approximately 161 neutrons), we can visually decrypt its chemical properties.

Across its 7 electron shells, Hassium distributes its electrons in the following exact hierarchical sequence, from the innermost ring outward: 2 – 8 – 18 – 32 – 32 – 14 – 2.

Applying the Bohr Rules to Hassium

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 Hassium, 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 Hassium, its 108 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 – 14 – 2 sequence. Because Hassium 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 Hassium's Valence Electrons

When analyzing the Bohr model of Hassium, the absolute most critical ring is the outermost shell. This layer holds exactly 8 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 Hassium has 8 valence electrons, it inherently seeks to achieve a stable "octet" (a full outer shell of 8 electrons, or 2 for lightweight elements). Holding a perfect, completely filled valence shell means Hassium possesses maximum thermodynamic stability. It refuses to surrender or accept electrons, actively resisting bonding and remaining a completely inert, monatomic gas.

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 Hassium, represented universally by the chemical symbol Hs, holds the atomic number 108. This means that a standard neutral atom of Hassium possesses exactly 108 protons within its dense nucleus, orbited precisely by 108 electrons. With a standard atomic weight of approximately 269.000 atomic mass units (u), Hassium is classified fundamentally as a transition metal.

From a periodic standpoint, Hassium resides in Period 7 and Group 8 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, Hassium exhibits a calculated atomic radius of 134 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 Hassium interacts, bonds, and reacts with every other chemical element in the observable universe.

Atomic Properties — Hassium

Atomic Mass

269 u

Electronegativity

0 (Pauling)

Block / Group

D-block, Group 8

Period

Period 7

Atomic Radius

134 pm

Ionization Energy

N/A

Electron Affinity

0 eV

Category

Transition Metal

Oxidation States

+8

Real-World Applications

Group 8 Transactinide ChemistryOsO₄ Analogue Chemistry ResearchNuclear PhysicsGSI Darmstadt ResearchPeriodic Table Validation at High Z

Real-World Applications & Industrial Uses

The distinct electronic structure of Hassium 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 Hassium:

  • Group 8 Transactinide Chemistry: Its baseline chemical reactivity makes it specifically suited for this primary role.
  • OsO₄ Analogue Chemistry Research: Used heavily in advanced manufacturing and chemical processing.
  • Nuclear Physics
  • GSI Darmstadt Research
  • Periodic Table Validation at High Z

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

  • Did You Know?

    Named after Hesse (Hassia), Germany. Gas-phase chemistry experiments on HsO₄ (hassium tetroxide) in 2002 showed it adsorbs on surfaces identically to OsO₄ — confirming Hs is a group-8 element. It is the heaviest element whose chemical behaviour has been studied experimentally.

    Shell-by-Shell Capacity Table

    How each of Hassium'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)1472
    19%
    7Q (n=7)298
    2%

    Shell Comparison: Hassium vs Neighbors

    ← Previous Element

    Bh

    Bohrium

    Z=107

    2-8-18-32-32-13-2 shells

    View Bohr Model

    ⬤ Current

    Hs

    Hassium

    Z=108

    2-8-18-32-32-14-2 shells

    Next Element →

    Mt

    Meitnerium

    Z=109

    2-8-18-32-32-15-2 shells

    View Bohr Model

    Frequently Asked Questions — Hassium Bohr Model

    Authoritative References

    The atomic and structural data for Hassium 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.