33 As Arsenic 74,922 u

Arsenic

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Período
4
Grupo
15
Bloque
p-bloque
Fase (STP)
Solid

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

Apariencia: Metallic grey

Propiedades físicas

Masa atómica 74.922 u
Densidad 5.727 g/cm³
Punto de fusión 816.9 °C
Punto de ebullición 613.9 °C
Fase a STP Solid
Radio atómico 114.0 pm

Propiedades electrónicas

Electronegatividad 2.18
Energía de ionización 947.0 eV
Afinidad electrónica 78.2 eV
Electrones de valencia 5

Configuración electrónica

Configuración [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

Descubrimiento

Descubierto por: Albertus Magnus
Año: 1250

Bloque y período

Período

Tabla Periódica

Lantánidos Actínidos

Compounds Containing Arsenic

Más 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.