19 K Potassium 39.098 u

Potassium

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周期
4
1
区块
s-区块
相态 (STP)
Solid

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

外观: 银白色金属

物理属性

原子质量 39.098 u
密度 0.862 g/cm³
熔点 63.6 °C
沸点 758.9 °C
STP相态 Solid
原子半径 243.0 pm

电子属性

电负性 0.82
电离能 418.8 eV
电子亲和能 48.4 eV
价电子 1

电子构型

构型 [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

发现

发现者: Humphry Davy
年份: 1807

Compounds Containing Potassium

更多碱金属

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 碱金属.
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.