19 K Potassium 39,098 u

Potassium

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Período
4
Grupo
1
Bloco
s-bloco
Fase (STP)
Solid

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

Aparência: Silvery-gray

Propriedades físicas

Massa atômica 39.098 u
Densidade 0.862 g/cm³
Ponto de fusão 63.6 °C
Ponto de ebulição 758.9 °C
Fase em STP Solid
Raio atômico 243.0 pm

Propriedades eletrônicas

Eletronegatividade 0.82
Energia de ionização 418.8 eV
Afinidade eletrônica 48.4 eV
Elétrons de valência 1

Configuração eletrônica

Configuração [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

Descoberta

Descoberto por: Humphry Davy
Ano: 1807

Compounds Containing Potassium

Mais Metal Alcalino

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 metal alcalino.
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.