21 Sc Scandium 44,956 u

Scandium

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Период
4
Группа
3
Блок
d-Блок
Фаза (СТУ)
Solid

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

Внешний вид: Silvery white

Физические свойства

Атомная масса 44.956 u
Плотность 2.985 g/cm³
Температура плавления 1540.8 °C
Температура кипения 2835.8 °C
Фаза при СТУ Solid
Атомный радиус 184.0 pm

Электронные свойства

Электроотрицательность 1.36
Энергия ионизации 633.1 eV
Сродство к электрону 18.1 eV
Валентные электроны 3

Электронная конфигурация

Конфигурация [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

Открытие

Открыт: Lars Fredrik Nilson
Год: 1879

Блок и период

Период

Периодическая таблица

Лантаниды Актиниды

Больше Переходный металл

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 переходный металл.
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.