61 Pm Prometio 145,0 u

Prometio

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Período
6
Grupo
—
Bloque
f-bloque
Fase (STP)
Solid

El prometio es el único lantánido radiactivo sin isótopos estables. Se usa en pintura luminosa y baterías nucleares.

Acerca de Prometio

Alone among the lanthanides, promethium (Pm) has no stable isotopes and is intensely radioactive, making it exceedingly rare in nature. Element 61 sits in period 6 of the f-block, with an atomic mass near 145, the electron configuration [Xe] 4f⁵ 6s², and a Pauling electronegativity of 1.13. Its radioactivity is put to practical use: promethium has been incorporated into self-luminous paints and into compact nuclear batteries that supply long-lived power for specialized instruments. The element is a soft metal, solid at standard conditions, and adopts the +3 oxidation state of its neighbors.

Propiedades físicas

Masa atómica 145.0 u
Fase a STP Solid

Propiedades electrónicas

Electronegatividad 1.13

Configuración electrónica

Configuración [Xe] 4f⁵ 6s²

Configuración de capas electrónicas

Configuración de capas electrónicas de Prometio Pm 2e⁻ 8e⁻ 18e⁻ 23e⁻ 8e⁻ 2e⁻
Estructura de capas electrónicas de Prometio: electrones por capa.
Capa Electrones
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 23
5 (O) 8
6 (P) 2

Posición en la tabla periódica

Posición de Prometio en la tabla periódica Pm

Bloque y período

Bloque

s p d f

Período

1 2 3 4 5 6 7

Tabla Periódica

Lantánidos Actínidos

Más Lantánido

57 La Lantano 58 Ce Cerio 59 Pr Praseodimio 60 Nd Neodimio 62 Sm Samario 63 Eu Europio 64 Gd Gadolinio 65 Tb Terbio 66 Dy Disprosio 67 Ho Holmio

Frequently Asked Questions

What is Prometio?
Prometio (Pm) is a chemical element with atomic number 61. It is a solid at standard temperature and pressure, classified as a lantánido.
What are the key properties of Prometio?
Prometio has an atomic mass of 145.0 u.
What is the electron configuration of Prometio?
The electron configuration of Prometio is [Xe] 4f5 6s2. It is in the f-block of the periodic table.
What is the electronegativity of Prometio?
Prometio has an electronegativity of 1.13 on the Pauling scale.