33 As Arsenic 74,922 u

Arsenic

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Período
4
Grupo
15
Bloco
p-bloco
Fase (STP)
Solid

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

Aparência: Metallic grey

Propriedades físicas

Massa atômica 74.922 u
Densidade 5.727 g/cm³
Ponto de fusão 816.9 °C
Ponto de ebulição 613.9 °C
Fase em STP Solid
Raio atômico 114.0 pm

Propriedades eletrônicas

Eletronegatividade 2.18
Energia de ionização 947.0 eV
Afinidade eletrônica 78.2 eV
Elétrons de valência 5

Configuração eletrônica

Configuração [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

Descoberta

Descoberto por: Albertus Magnus
Ano: 1250

Bloco e período

Período

Tabela Periódica

Lantanídeos Actinídeos

Compounds Containing Arsenic

Mais Metaloide

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 metaloide.
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.