95 Am Americio 243,0 u

Americio

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Período
7
Grupo
—
Bloque
f-bloque
Fase (STP)
Solid

El americio es un elemento radiactivo sintético presente en los detectores de humo domésticos. El Am-241 emite partículas alfa que ionizan el aire para detectar el humo.

Acerca de Americio

Millions of household smoke detectors contain a fraction of a gram of americium, making this synthetic actinide one of the few artificially produced elements in routine domestic use. Its atomic number is 95 and its relative atomic mass 243.0, with the configuration [Rn] 5f7 7s2 marking a half-filled 5f subshell, and its electronegativity is 1.3. The metal is solid under standard conditions. The detector application rests on a specific decay mode: americium-241 emits alpha particles that ionise the air inside a small chamber, producing a steady current that smoke particles interrupt. Because the alpha radiation is stopped by a short distance of air, the sealed source presents little hazard while the device remains intact.

Propiedades físicas

Masa atómica 243.0 u
Fase a STP Solid

Propiedades electrónicas

Electronegatividad 1.3

Configuración electrónica

Configuración [Rn] 5f⁷ 7s²

Configuración de capas electrónicas

Configuración de capas electrónicas de Americio Am 2e⁻ 8e⁻ 18e⁻ 32e⁻ 25e⁻ 8e⁻ 2e⁻
Estructura de capas electrónicas de Americio: electrones por capa.
Capa Electrones
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 32
5 (O) 25
6 (P) 8
7 (Q) 2

Posición en la tabla periódica

Posición de Americio en la tabla periódica Am

Bloque y período

Bloque

s p d f

Período

1 2 3 4 5 6 7

Tabla Periódica

Lantánidos Actínidos

Reacciones con Am

Desintegración alfa del americio-241

²⁴¹Am → ²³⁷Np + ⁴He

Nuclear

Más Actínido

89 Ac Actinio 90 Th Torio 91 Pa Protactinio 92 U Uranio 93 Np Neptunio 94 Pu Plutonio 96 Cm Curio 97 Bk Berkelio 98 Cf Californio 99 Es Einstenio

Frequently Asked Questions

What is Americio?
Americio (Am) is a chemical element with atomic number 95. It is a solid at standard temperature and pressure, classified as a actínido.
What are the key properties of Americio?
Americio has an atomic mass of 243.0 u.
What is the electron configuration of Americio?
The electron configuration of Americio is [Rn] 5f7 7s2. It is in the f-block of the periodic table.
What is the electronegativity of Americio?
Americio has an electronegativity of 1.3 on the Pauling scale.