33 As Arsenic 74.922 u

Arsenic

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주기
4
15
블록
p-블록
상 (표준 상태)
Solid

Arsenic is a metalloid known since antiquity, historically notorious as a poison. It is used in semiconductors and wood preservatives.

외관: 금속 회색

물리적 성질

원자 질량 74.922 u
밀도 5.727 g/cm³
녹는점 816.9 °C
끓는점 613.9 °C
표준 상태에서의 상 Solid
원자 반지름 114.0 pm

전자적 성질

전기 음성도 2.18
이온화 에너지 947.0 eV
전자 친화도 78.2 eV
원자가 전자 5

전자 배치

배치 [Ar] 3d¹⁰ 4s² 4p³

Electron Shell Configuration

Arsenic electron shell configuration As 2e⁻ 8e⁻ 18e⁻ 5e⁻

Position in Periodic Table

Arsenic position in the periodic table As

발견

발견자: Albertus Magnus
연도: 1250

주기율표

란타넘족 악티늄족

Compounds Containing Arsenic

더 많은 준금속

Frequently Asked Questions

What is Arsenic?
Arsenic (As) is a chemical element with atomic number 33. It is a solid at standard temperature and pressure, classified as a 준금속.
What are the key properties of Arsenic?
Arsenic has an atomic mass of 74.922 u, density of 5.727 g/cm³, melting point of 816.9°C, boiling point of 613.9°C.
What is the electron configuration of Arsenic?
The electron configuration of Arsenic is [Ar] 3d10 4s2 4p3. It is in the p-block of the periodic table.
Who discovered Arsenic?
Arsenic was discovered by Albertus Magnus in 1250.
What is the electronegativity of Arsenic?
Arsenic has an electronegativity of 2.18 on the Pauling scale.