33 As Arsenic 74,922 u

Arsenic

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Период
4
Группа
15
Блок
p-Блок
Фаза (СТУ)
Solid

Arsenic is a metalloid known since antiquity, historically notorious as a poison. It is used in semiconductors and wood preservatives.

Внешний вид: Metallic grey

Физические свойства

Атомная масса 74.922 u
Плотность 5.727 g/cm³
Температура плавления 816.9 °C
Температура кипения 613.9 °C
Фаза при СТУ Solid
Атомный радиус 114.0 pm

Электронные свойства

Электроотрицательность 2.18
Энергия ионизации 947.0 eV
Сродство к электрону 78.2 eV
Валентные электроны 5

Электронная конфигурация

Конфигурация [Ar] 3d¹⁰ 4s² 4p³

Electron Shell Configuration

Arsenic electron shell configuration As 2e⁻ 8e⁻ 18e⁻ 5e⁻

Position in Periodic Table

Arsenic position in the periodic table As

Открытие

Открыт: Albertus Magnus
Год: 1250

Блок и период

Период

Периодическая таблица

Лантаниды Актиниды

Compounds Containing Arsenic

Больше Металлоид

Frequently Asked Questions

What is Arsenic?
Arsenic (As) is a chemical element with atomic number 33. It is a solid at standard temperature and pressure, classified as a металлоид.
What are the key properties of Arsenic?
Arsenic has an atomic mass of 74.922 u, density of 5.727 g/cm³, melting point of 816.9°C, boiling point of 613.9°C.
What is the electron configuration of Arsenic?
The electron configuration of Arsenic is [Ar] 3d10 4s2 4p3. It is in the p-block of the periodic table.
Who discovered Arsenic?
Arsenic was discovered by Albertus Magnus in 1250.
What is the electronegativity of Arsenic?
Arsenic has an electronegativity of 2.18 on the Pauling scale.