19 K Potassium 39.098 u

Potassium

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周期
4
1
ブロック
s-ブロック
相 (STP)
Solid

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

外観: 銀灰色

物理的特性

原子質量 39.098 u
密度 0.862 g/cm³
融点 63.6 °C
沸点 758.9 °C
STPにおける相 Solid
原子半径 243.0 pm

電子的特性

電気陰性度 0.82
イオン化エネルギー 418.8 eV
電子親和力 48.4 eV
価電子 1

電子配置

配置 [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

発見

発見者: Humphry Davy
年: 1807

Compounds Containing Potassium

アルカリ金属 をもっと見る

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 アルカリ金属.
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.