Mendeleev فارسی

Hassium (Hs) – Element 108 of the periodic table

Hassium (symbol Hs) is element number 108 of the periodic table and belongs to the “Transition metal” category. Its atomic mass is about 269, and its phase under standard conditions is Solid (a theoretical prediction). This element sits in period 7 and group 8 of the periodic table, and its electrons are arranged in shells of 2, 8, 18, 32, 32, 14, 2. The short electron configuration of Hassium is [Rn] 5f¹⁴ 6d⁶ 7s². Known uses of Hassium include Scientific research.

View in the interactive periodic tableAsk the AI assistant

Hassium is a radioactive, mostly synthetic element; its data may be based on limited experiments or theoretical prediction.

Properties of Hassium

Atomic number
108
Chemical symbol
Hs
Atomic mass
269
Category
Transition metal
Period
7
Group
8
Phase
Solid (a theoretical prediction)
Protons
108
Electrons
108
Neutrons (approx.)
161
Electron shells
2, 8, 18, 32, 32, 14, 2
Outer-shell electrons
2
Discovered
GSI Helmholtz Centre for Heavy Ion Research (1984)

Electron configuration of Hassium

The electron configuration of Hassium (Hs), with 108 electrons, is shown below. The last shell (shell 7) is highlighted:

Full configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 5f¹⁴ 6s² 6p⁶ 6d⁶ 7s²
Short configuration
[Rn] 5f¹⁴ 6d⁶ 7s²
Last shell
7s²

This synthetic element’s electron configuration is a theoretical prediction.

What is electron configuration and how is it written?

Electron shells of Hassium

Distribution of 108 electrons of Hassium across shells K to Q:

  1. K2
  2. L8
  3. M18
  4. N32
  5. O32
  6. P14
  7. Q2

What is a transition metal?

The transition metals are the d-block elements: usually good conductors of heat and electricity, with several oxidation states, and they form colourful compounds and important catalysts.

Uses of Hassium

Frequently asked questions about Hassium

What is the atomic number of Hassium?

The atomic number of Hassium (Hs) is 108; that is, every atom of it has 108 protons.

What is the electron configuration of Hassium?

The electron configuration of Hassium (Hs) is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 5f¹⁴ 6s² 6p⁶ 6d⁶ 7s²; in short form it is [Rn] 5f¹⁴ 6d⁶ 7s², and its last shell is 7s².

What is the chemical symbol of Hassium?

The chemical symbol of Hassium is Hs.

Where is Hassium located in the periodic table?

Hassium is located in period 7 and group 8 and belongs to the “Transition metal” category.

What is the atomic mass of Hassium?

The atomic mass of Hassium is about 269 (atomic mass units).

What is the phase of Hassium under normal conditions?

The phase of Hassium under standard conditions is Solid (a theoretical prediction).

What are the uses of Hassium?

Uses of Hassium include Scientific research.

Who discovered Hassium?

Hassium was discovered by GSI Helmholtz Centre for Heavy Ion Research in 1984.

Elements in the same category as Hassium (Transition metal)

Palladium (Pd)Silver (Ag)Cadmium (Cd)Hafnium (Hf)Tantalum (Ta)Tungsten (W)Rhenium (Re)Osmium (Os)Iridium (Ir)Platinum (Pt)Gold (Au)Mercury (Hg)Rutherfordium (Rf)Dubnium (Db)Seaborgium (Sg)Bohrium (Bh)Meitnerium (Mt)Darmstadtium (Ds)Roentgenium (Rg)Copernicium (Cn)

See all Transition metals

Hassium’s group 8 neighbours

Iron (Fe)Ruthenium (Ru)Osmium (Os)

Group 8 of the periodic table