93 Np Neptunio 237,0 u

Neptunio

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

El neptunio fue el primer elemento transuránico sintético, bautizado en honor al planeta Neptuno. Es un subproducto de los reactores nucleares.

Acerca de Neptunio

Neptunium was the first transuranium element to be made artificially, and the naming followed the sequence of the outer planets: the element beyond uranium took the name of the planet beyond Uranus. It holds atomic number 93 and a relative atomic mass of 237.0, with the configuration [Rn] 5f4 6d1 7s2 and an electronegativity of 1.36. The metal is solid under standard conditions and belongs to the actinide series of period 7. In practice, neptunium arises chiefly as a byproduct of reactor operation, formed when uranium fuel captures neutrons without undergoing fission. Its long-lived isotope is consequently a significant component of the actinide inventory that has to be accounted for in spent-fuel management.

Propiedades físicas

Masa atómica 237.0 u
Fase a STP Solid

Propiedades electrónicas

Electronegatividad 1.36

Configuración electrónica

Configuración [Rn] 5f⁴ 6d¹ 7s²

Configuración de capas electrónicas

Configuración de capas electrónicas de Neptunio Np 2e⁻ 8e⁻ 18e⁻ 32e⁻ 22e⁻ 9e⁻ 2e⁻
Estructura de capas electrónicas de Neptunio: electrones por capa.
Capa Electrones
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 32
5 (O) 22
6 (P) 9
7 (Q) 2

Posición en la tabla periódica

Posición de Neptunio en la tabla periódica Np

Bloque y período

Bloque

s p d f

Período

1 2 3 4 5 6 7

Tabla Periódica

Lantánidos Actínidos

Reacciones con Np

Desintegración alfa del americio-241

²⁴¹Am → ²³⁷Np + ⁴He

Nuclear

Más Actínido

89 Ac Actinio 90 Th Torio 91 Pa Protactinio 92 U Uranio 94 Pu Plutonio 95 Am Americio 96 Cm Curio 97 Bk Berkelio 98 Cf Californio 99 Es Einstenio

Frequently Asked Questions

What is Neptunio?
Neptunio (Np) is a chemical element with atomic number 93. It is a solid at standard temperature and pressure, classified as a actínido.
What are the key properties of Neptunio?
Neptunio has an atomic mass of 237.0 u.
What is the electron configuration of Neptunio?
The electron configuration of Neptunio is [Rn] 5f4 6d1 7s2. It is in the f-block of the periodic table.
What is the electronegativity of Neptunio?
Neptunio has an electronegativity of 1.36 on the Pauling scale.