12 Mg Magnesium 24,305 u

Magnesium

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Periode
3
Gruppe
2
Block
s-Block
Phase (STP)
Solid

Magnesium is a lightweight alkaline earth metal essential for living cells. It burns with a bright white flame and is used in alloys and fireworks.

Erscheinungsbild: Shiny grey solid

Physikalische Eigenschaften

Atommasse 24.305 u
Dichte 1.738 g/cm³
Schmelzpunkt 649.9 °C
Siedepunkt 1089.8 °C
Phase bei STP Solid
Atomradius 145.0 pm

Elektronische Eigenschaften

Elektronegativität 1.31
Ionisierungsenergie 737.7 eV
Valenzelektronen 2

Elektronenkonfiguration

Konfiguration [Ne] 3s²

Electron Shell Configuration

Magnesium electron shell configuration Mg 2e⁻ 8e⁻ 2e⁻

Position in Periodic Table

Magnesium position in the periodic table Mg

Entdeckung

Entdeckt von: Joseph Black
Jahr: 1755

Compounds Containing Magnesium

Mehr Erdalkalimetall

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Frequently Asked Questions

What is Magnesium?
Magnesium (Mg) is a chemical element with atomic number 12. It is a solid at standard temperature and pressure, classified as a erdalkalimetall.
What are the key properties of Magnesium?
Magnesium has an atomic mass of 24.305 u, density of 1.738 g/cm³, melting point of 649.9°C, boiling point of 1089.8°C.
What is the electron configuration of Magnesium?
The electron configuration of Magnesium is [Ne] 3s2. It is in the s-block of the periodic table.
Who discovered Magnesium?
Magnesium was discovered by Joseph Black in 1755.
What is the electronegativity of Magnesium?
Magnesium has an electronegativity of 1.31 on the Pauling scale.