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• Oganesson

  Oganesson (Og) is a chemical element belonging to the category Noble gas, with atomic number 118 and atomic mass 294.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

  Updated at 2026-08-02 10:50:11

• Tenesino

  Tenesino (Ts) is a chemical element belonging to the category Halogen, with atomic number 117 and atomic mass 294.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

  Updated at 2026-08-02 10:50:11

• Livermorio

  Livermorio (Lv) is a synthetic, highly radioactive chemical element, probably belonging to the category Post-transition metal, with atomic number 116 and atomic mass 293.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

  Updated at 2026-08-02 10:50:11

• Moscovium

  Moscovium (Mc) is a synthetic superheavy element of the p-block, group 15, period 7, with atomic number 115 and an estimated atomic mass [289] u. This sheet describes its basic properties, periodic position and theoretical physico-chemical characteristics.

  Updated at 2026-08-02 10:50:11

• Flerovium

  Flerovium (Fl) is a synthetic superheavy chemical element classified as a post-transition metal. It has atomic number 114 and a standard atomic mass written as [289]. This sheet describes its properties, periodic classification and predicted physical characteristics.

  Updated at 2026-08-02 10:50:11

• Nihonio

  Nihonio (Nh) is a chemical element belonging to the category Post-transition metal, with atomic number 113 and atomic mass 286.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

  Updated at 2026-08-02 10:50:11

• Kopernikio

  Kopernikio (Cn) is a synthetic chemical element belonging to the category Transition metal, with atomic number 112 and atomic mass 285.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

  Updated at 2026-08-02 10:50:11

• Roentgenium

  Roentgenium (Rg) is a synthetic, highly radioactive chemical element belonging to the category Transition metal, with atomic number 111 and atomic mass 282.0000 u (based on its most stable known isotope). This sheet describes its fundamental properties, position in the periodic table and physical characteristics.

  Updated at 2026-08-02 10:50:11

• Darmstadtio

  Darmstadtio (Ds) is a chemical element belonging to the category Transition metal, with atomic number 110 and atomic mass 281.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

  Updated at 2026-08-02 10:50:11

• Meitnerio

  Meitnerio (Mt) is a synthetic chemical element belonging to the category Transition metal, with atomic number 109 and atomic mass 276.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

  Updated at 2026-08-02 10:50:11

• Hassium

  Hassium (Hs) is a chemical element belonging to the category Transition metal, with atomic number 108 and atomic mass 277.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

  Updated at 2026-08-02 10:50:11

• Bohrio

  Bohrio (Bh) is a chemical element belonging to the Transition metal category, with atomic number 107 and atomic mass 270.0000 u.

  Updated at 2026-08-02 10:50:11

• Seaborgium

  Seaborgium (Sg) is a chemical element belonging to the category Transition metal, with atomic number 106 and atomic mass 271.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

  Updated at 2026-08-02 10:50:11

• Dubnium

  Dubnium (Db) is a chemical element belonging to the category Transition metal, with atomic number 105 and atomic mass 268.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

  Updated at 2026-08-02 10:50:11

• Rutherfordium

  Rutherfordium (Rf) is a synthetic, highly radioactive chemical element belonging to the category Transition metal, with atomic number 104 and atomic mass 267.0000 u (for its most stable isotope). This sheet describes its fundamental properties, periodic position and physical characteristics.

  Updated at 2026-08-02 10:50:11

• Lawrencium

  Lawrencium (Lr) is a chemical element belonging to the category Inner transition metal (actinide series), with atomic number 103 and atomic mass 262.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

  Updated at 2026-08-02 10:50:11

• Nobelio

  Nobelio (No) is a chemical element belonging to the category Inner transition metal, with atomic number 102 and atomic mass 259.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

  Updated at 2026-08-02 10:50:11

• Mendelevium

  Mendelevium (Md) is a synthetic actinide chemical element of atomic number 101 and atomic mass ~258 u. This sheet describes its fundamental properties, periodic-table position and physical characteristics.

  Updated at 2026-08-02 10:50:11

• Fermium

  Fermium (Fm) is a synthetic, radioactive chemical element belonging to the category Inner transition metal (actinide), with atomic number 100 and atomic mass 257.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

  Updated at 2026-08-02 10:50:11

• Einsteinio

  Einsteinio (Es) is a chemical element belonging to the category Inner transition metal, with atomic number 99 and atomic mass 252.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

  Updated at 2026-08-02 10:50:11