100 Fm Fermio 257,0 u

Fermio

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

El fermio es un elemento sintético bautizado en honor a Enrico Fermi. También se identificó por primera vez en los residuos de una bomba de hidrógeno.

Acerca de Fermio

Like einsteinium beside it, fermium was first identified in debris from a hydrogen bomb test, the element having been assembled inside the explosion by rapid successive neutron capture. It honours Enrico Fermi and holds atomic number 100 with a relative atomic mass of 257.0. The configuration [Rn] 5f12 7s2 places it late in the actinide series of period 7, and its Pauling electronegativity is given as 1.3. Under standard conditions it is a solid. Fermium marks a practical boundary in actinide production: it is the heaviest element that can be made in weighable amounts by neutron irradiation in a reactor, and everything past it requires bombardment with charged particles in an accelerator instead.

Propiedades físicas

Masa atómica 257.0 u
Fase a STP Solid

Propiedades electrónicas

Electronegatividad 1.3

Configuración electrónica

Configuración [Rn] 5f¹² 7s²

Configuración de capas electrónicas

Configuración de capas electrónicas de Fermio Fm 2e⁻ 8e⁻ 18e⁻ 32e⁻ 30e⁻ 8e⁻ 2e⁻
Estructura de capas electrónicas de Fermio: electrones por capa.
Capa Electrones
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 32
5 (O) 30
6 (P) 8
7 (Q) 2

Posición en la tabla periódica

Posición de Fermio en la tabla periódica Fm

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 91 Pa Protactinio 92 U Uranio 93 Np Neptunio 94 Pu Plutonio 95 Am Americio 96 Cm Curio 97 Bk Berkelio 98 Cf Californio

Frequently Asked Questions

What is Fermio?
Fermio (Fm) is a chemical element with atomic number 100. It is a solid at standard temperature and pressure, classified as a actínido.
What are the key properties of Fermio?
Fermio has an atomic mass of 257.0 u.
What is the electron configuration of Fermio?
The electron configuration of Fermio is [Rn] 5f12 7s2. It is in the f-block of the periodic table.
What is the electronegativity of Fermio?
Fermio has an electronegativity of 1.3 on the Pauling scale.