21 Sc Scandium 44,956 u

Scandium

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الدورة
4
المجموعة
3
الكتلة
d-كتلة
الطور (STP)
Solid

Scandium is a soft, silvery transition metal used in aerospace alloys. It is relatively rare and was predicted by Mendeleev before its discovery.

المظهر: Silvery white

الخصائص الفيزيائية

الكتلة الذرية 44.956 u
الكثافة 2.985 g/cm³
نقطة الانصهار 1540.8 °C
نقطة الغليان 2835.8 °C
الطور عند STP Solid
نصف القطر الذري 184.0 pm

الخصائص الإلكترونية

الكهروسالبية 1.36
طاقة التأين 633.1 eV
ألفة الإلكترون 18.1 eV
إلكترونات التكافؤ 3

التوزيع الإلكتروني

التهيئة [Ar] 3d¹ 4s²

Electron Shell Configuration

Scandium electron shell configuration Sc 2e⁻ 8e⁻ 9e⁻ 2e⁻

Position in Periodic Table

Scandium position in the periodic table Sc

الاكتشاف

اكتشفه: Lars Fredrik Nilson
السنة: 1879

الكتلة والدورة

الكتلة

الدورة

الجدول الدوري

اللانثانيدات الأكتينيدات

المزيد من فلز انتقالي

Frequently Asked Questions

What is Scandium?
Scandium (Sc) is a chemical element with atomic number 21. It is a solid at standard temperature and pressure, classified as a فلز انتقالي.
What are the key properties of Scandium?
Scandium has an atomic mass of 44.956 u, density of 2.985 g/cm³, melting point of 1540.8°C, boiling point of 2835.8°C.
What is the electron configuration of Scandium?
The electron configuration of Scandium is [Ar] 3d1 4s2. It is in the d-block of the periodic table.
Who discovered Scandium?
Scandium was discovered by Lars Fredrik Nilson in 1879.
What is the electronegativity of Scandium?
Scandium has an electronegativity of 1.36 on the Pauling scale.