12 Mg Magnesium 24,305 u

Magnesium

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الدورة
3
المجموعة
2
الكتلة
s-كتلة
الطور (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.

المظهر: Shiny grey solid

الخصائص الفيزيائية

الكتلة الذرية 24.305 u
الكثافة 1.738 g/cm³
نقطة الانصهار 649.9 °C
نقطة الغليان 1089.8 °C
الطور عند STP Solid
نصف القطر الذري 145.0 pm

الخصائص الإلكترونية

الكهروسالبية 1.31
طاقة التأين 737.7 eV
إلكترونات التكافؤ 2

التوزيع الإلكتروني

التهيئة [Ne] 3s²

Electron Shell Configuration

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

Position in Periodic Table

Magnesium position in the periodic table Mg

الاكتشاف

اكتشفه: Joseph Black
السنة: 1755

Compounds Containing Magnesium

المزيد من فلز قلوي ترابي

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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 فلز قلوي ترابي.
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.