Articles

172 articles

• Chemical element

  Actinium

  Actinium (Ac) is a chemical element belonging to the category Actinide metal, with atomic number 89 and atomic mass 227.0000 u. This sheet describes its fundamental properties, periodic position and physical…

• Chemical element

  Aluminium

  Aluminium (Al) is a post-transition metal with atomic number 13 and atomic mass 26.9815 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

• Chemical element

  Americio

  Americio (Am) is a chemical element belonging to the category Inner transition metal (actinide), with atomic number 95 and atomic mass 243.0000 u. This sheet describes its fundamental properties, periodic position and…

• Chemical element

  Antimony

  Antimony (Sb) is a chemical element belonging to the category Metalloid, with atomic number 51 and atomic mass 121.7600 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

• Classification

  Aquilides

  Aquilides are icy giant planets with a high fraction of volatiles, dense internal layers, a hydrogen-helium atmosphere, methane absorption, and strong winds at very low temperatures.

• Chemical element

  Argon

  Argon (Ar) is a chemical element belonging to the category Noble gas, with atomic number 18 and standard atomic mass 39.9480 u. This sheet describes its fundamental properties, periodic position and physical…

• Chemical element

  Arsenic

  Arsenic (As) is a metalloid with atomic number 33 and atomic mass 74.922 u. It sublimates at normal pressure and exists mainly in a stable gray allotrope.

• Chemical element

  Astatine

  Astatine (At) is a chemical element belonging to the Halogen category, with atomic number 85 and atomic mass 210.0000 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

• Classification

  Asteria Planet

  Planets of the Asteria class are rocky bodies without an atmosphere, exposed to large temperature variations, direct stellar radiation, and intense impact activity.

• Body type

  Asteroid

  An asteroid is a rocky body orbiting a star, often located in zones of gravitational transition, smaller than planets and lacking an atmosphere.

• Chemical element

  Barium

  Barium (Ba) is a chemical element belonging to the category Alkaline earth metal, with atomic number 56 and atomic mass 137.3270 u.

• Chemical element

  Berkelium

  Berkelium (Bk) is a chemical element of the actinide series (inner transition metal), with atomic number 97 and atomic mass 247.0000 u. This sheet describes its fundamental properties, periodic position and physical…

• Chemical element

  Beryllium

  Beryllium (Be) is positioned in group 2 as an alkaline earth metal, but its chemical behaviour is highly anomalous compared to the rest of the group. Due to its small ionic radius and high ionization energy, it forms…

• Chemical element

  Bismuth

  Bismuth (Bi) is a chemical element belonging to the category Post-transition metal, with atomic number 83 and atomic mass 208.9800 u.

• Chemical element

  Bohrio

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

• Chemical element

  Boron

  Boron (B) is a chemical element belonging to the category metalloid, with atomic number 5 and atomic mass 10.8100 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

• Chemical element

  Bromine

  Bromine (Br) is a chemical element belonging to the Halogen group, with atomic number 35 and atomic mass 79.904 u.

• Astronomical type

  C-type Asteroid

  A C-type asteroid is a carbon-rich celestial body, generally dark, composed of primitive materials, reflecting the early chemical conditions of the solar system.

• Chemical element

  Cadmium

  Cadmium (Cd) is a chemical element belonging to the category Transition metal, with atomic number 48 and atomic mass 112.4140 u. This sheet describes its fundamental properties, periodic position and physical…

• Chemical element

  Cezio

  Cezio (Cs) is a chemical element belonging to the category Alkali metal, with atomic number 55 and atomic mass 132.9055 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

• Chemical element

  Calcium

  Calcium (Ca) is a chemical element belonging to the category Alkaline earth metal, with atomic number 20 and atomic mass 40.0780 u. This sheet describes its fundamental properties, periodic position and physical…

• Chemical element

  Kalifornio

  Kalifornio (Cf) is a chemical element belonging to the category Inner transition metal (actinide series), with atomic number 98 and atomic mass 251.0000 u. This sheet describes its fundamental properties, periodic…

• Chemical element

  Carbon

  Carbon (C) is a chemical element belonging to the category Non-metal, with atomic number 6 and atomic mass 12.0110 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

• Chemical element

  Cerium

  Cerium (Ce) is a lanthanide and inner transition metal with atomic number 58 and atomic mass 140.1160 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

• Chemical element

  Chlorine

  Chlorine (Cl) is a chemical element belonging to the category Halogen, with atomic number 17 and atomic mass 35.4500 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

• Chemical element

  Kromo

  Kromo (Cr) is a chemical element belonging to the category Transition metal, with atomic number 24 and atomic mass 51.9960 u. This sheet describes its fundamental properties, periodic position and physical…

• Chemical element

  Kobalto

  Kobalto (Co) is a chemical element belonging to the category Transition metal, with atomic number 27 and atomic mass 58.9330 u. This sheet describes its fundamental properties, periodic position and physical…

• Body type

  Comet

  A comet is an icy small body orbiting a star, developing a coma and a tail when approaching stellar radiation.

• Chemical element

  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…

• Chemical element

  Copper

  Copper (Cu) is a chemical element belonging to the category Transition metal, with atomic number 29 and atomic mass 63.5460 u. This sheet describes its fundamental properties, periodic position and physical…

• Chemical element

  Kurio

  Kurio (Cm) is a chemical element belonging to the category Inner transition metal, with atomic number 96 and atomic mass 247.0000 u. This sheet describes its fundamental properties, periodic position and physical…

• Astronomical type

  D-type asteroid

  A D-type asteroid is a dark body rich in organic and volatile compounds, showing low reflectivity and primitive features close to the original materials of the solar system.

• Chemical element

  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…

• Chemical element

  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…

• Astronomical type

  Dwarf planet

  A dwarf planet is a celestial body orbiting a star, massive enough to be nearly spherical, but not massive enough to clear neighboring objects from its orbit.

• Astronomical type

  Dwarf Star

  A dwarf star is a type of star with small size and low luminosity, belonging to the longest or final phases of stellar evolution, with highly diverse structural characteristics.

• Chemical element

  Dysprosium

  Dysprosium (Dy) is a lanthanide (f-block rare-earth metal) with atomic number 66 and atomic mass 162.50 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

• Celestial object

  Earth

  Earth is a rocky body structured into solid, fluid and gaseous layers, where the surface, waters, atmosphere and dynamic fields interact to form a coherent geophysical system.

• Chemical element

  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…

• Chemical element

  Erbium

  Erbium (Er) is a chemical element belonging to the category Inner transition metal, with atomic number 68 and atomic mass 167.2600 u. This sheet describes its fundamental properties, periodic position and physical…