19 K Potassium 39,098 u

Potassium

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Период
4
Группа
1
Блок
s-Блок
Фаза (СТУ)
Solid

Potassium is an essential alkali metal for all living cells. It is the seventh most abundant element in Earth's crust.

Внешний вид: Silvery-gray

Физические свойства

Атомная масса 39.098 u
Плотность 0.862 g/cm³
Температура плавления 63.6 °C
Температура кипения 758.9 °C
Фаза при СТУ Solid
Атомный радиус 243.0 pm

Электронные свойства

Электроотрицательность 0.82
Энергия ионизации 418.8 eV
Сродство к электрону 48.4 eV
Валентные электроны 1

Электронная конфигурация

Конфигурация [Ar] 4s¹

Electron Shell Configuration

Potassium electron shell configuration K 2e⁻ 8e⁻ 8e⁻ 1e⁻

Position in Periodic Table

Potassium position in the periodic table K

Открытие

Открыт: Humphry Davy
Год: 1807

Compounds Containing Potassium

Больше Щелочной металл

Frequently Asked Questions

What is Potassium?
Potassium (K) is a chemical element with atomic number 19. It is a solid at standard temperature and pressure, classified as a щелочной металл.
What are the key properties of Potassium?
Potassium has an atomic mass of 39.098 u, density of 0.862 g/cm³, melting point of 63.6°C, boiling point of 758.9°C.
What is the electron configuration of Potassium?
The electron configuration of Potassium is [Ar] 4s1. It is in the s-block of the periodic table.
Who discovered Potassium?
Potassium was discovered by Humphry Davy in 1807.
What is the electronegativity of Potassium?
Potassium has an electronegativity of 0.82 on the Pauling scale.