91 Pa Protactinio 231,04 u

Protactinio

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

El protactinio es un actínido escaso y radiactivo. Es uno de los elementos naturales más raros y caros.

Acerca de Protactinio

Scarcity and cost define protactinium's place among the naturally occurring elements; it ranks with the rarest and the most expensive of them. Atomic number 91 and a relative atomic mass of 231.04 place it between thorium and uranium in the actinide series, and its configuration [Rn] 5f2 6d1 7s2 shows the 5f subshell beginning to fill. The Pauling electronegativity is 1.5, the highest among the early actinides, and the element is a solid under standard conditions. Because it is radioactive and occurs only in minute quantities within uranium ores, protactinium has no bulk industrial use. Its chemistry is studied instead for what the filling of the 5f orbitals reveals about bonding across the f-block.

Propiedades físicas

Masa atómica 231.04 u
Fase a STP Solid

Propiedades electrónicas

Electronegatividad 1.5

Configuración electrónica

Configuración [Rn] 5f² 6d¹ 7s²

Configuración de capas electrónicas

Configuración de capas electrónicas de Protactinio Pa 2e⁻ 8e⁻ 18e⁻ 32e⁻ 20e⁻ 9e⁻ 2e⁻
Estructura de capas electrónicas de Protactinio: electrones por capa.
Capa Electrones
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 32
5 (O) 20
6 (P) 9
7 (Q) 2

Posición en la tabla periódica

Posición de Protactinio en la tabla periódica Pa

Bloque y período

Bloque

s p d f

Período

1 2 3 4 5 6 7

Tabla Periódica

Lantánidos Actínidos

Más Actínido

89 Ac Actinio 90 Th Torio 92 U Uranio 93 Np Neptunio 94 Pu Plutonio 95 Am Americio 96 Cm Curio 97 Bk Berkelio 98 Cf Californio 99 Es Einstenio

Frequently Asked Questions

What is Protactinio?
Protactinio (Pa) is a chemical element with atomic number 91. It is a solid at standard temperature and pressure, classified as a actínido.
What are the key properties of Protactinio?
Protactinio has an atomic mass of 231.04 u.
What is the electron configuration of Protactinio?
The electron configuration of Protactinio is [Rn] 5f2 6d1 7s2. It is in the f-block of the periodic table.
What is the electronegativity of Protactinio?
Protactinio has an electronegativity of 1.5 on the Pauling scale.