55 Cs Cesio 132,91 u

Cesio

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Período
6
Grupo
1
Bloque
s-bloque
Fase (STP)
Solid

El cesio es el elemento estable más electropositivo. Se emplea en relojes atómicos, que definen el segundo en el SI.

Acerca de Cesio

Cesium (Cs) is the most electropositive of the stable elements, giving up its single outer electron with exceptional ease. Element 55 heads group 1, period 6, in the s-block, with an atomic mass of 132.91, the electron configuration [Xe] 6s¹, and the lowest electronegativity of any stable element at 0.79. Its defining application is timekeeping: the vibrations of cesium-133 atoms define the SI second, the basis of atomic clocks worldwide. A soft, highly reactive alkali metal, cesium is solid at standard conditions and, like others in group 1, reacts vigorously with water.

Propiedades físicas

Masa atómica 132.91 u
Fase a STP Solid

Propiedades electrónicas

Electronegatividad 0.79

Configuración electrónica

Configuración [Xe] 6s¹

Configuración de capas electrónicas

Configuración de capas electrónicas de Cesio Cs 2e⁻ 8e⁻ 18e⁻ 18e⁻ 8e⁻ 1e⁻
Estructura de capas electrónicas de Cesio: electrones por capa.
Capa Electrones
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 18
5 (O) 8
6 (P) 1

Posición en la tabla periódica

Posición de Cesio en la tabla periódica Cs

Frequently Asked Questions

What is Cesio?
Cesio (Cs) is a chemical element with atomic number 55. It is a solid at standard temperature and pressure, classified as a metal alcalino.
What are the key properties of Cesio?
Cesio has an atomic mass of 132.91 u.
What is the electron configuration of Cesio?
The electron configuration of Cesio is [Xe] 6s1. It is in the s-block of the periodic table.
What is the electronegativity of Cesio?
Cesio has an electronegativity of 0.79 on the Pauling scale.