19 K Potassium 39.098 u

Potassium

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주기
4
1
블록
s-블록
상 (표준 상태)
Solid

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

외관: 은회색

물리적 성질

원자 질량 39.098 u
밀도 0.862 g/cm³
녹는점 63.6 °C
끓는점 758.9 °C
표준 상태에서의 상 Solid
원자 반지름 243.0 pm

전자적 성질

전기 음성도 0.82
이온화 에너지 418.8 eV
전자 친화도 48.4 eV
원자가 전자 1

전자 배치

배치 [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

발견

발견자: Humphry Davy
연도: 1807

Compounds Containing Potassium

더 많은 알칼리 금속

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 알칼리 금속.
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.