103 Lr Lawrencio 266,0 u

Lawrencio

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

El lawrencio es el último elemento de la serie de los actínidos y debe su nombre a Ernest O. Lawrence. Tiene la vida media más corta de todos los actínidos.

Acerca de Lawrencio

Lawrencium closes the actinide series at atomic number 103, and no member of that series decays faster; its half-life is the shortest of the fourteen. Named for Ernest O. Lawrence, the inventor of the cyclotron, it has a relative atomic mass of 266.0 and an electronegativity of 1.3, and is a solid under standard conditions. Its configuration, [Rn] 5f14 7s2 7p1, is notable in its own right: the outermost electron occupies a 7p orbital rather than the 6d orbital that simple periodic reasoning would predict, a departure attributed to relativistic effects on the innermost electrons of so heavy an atom. On that basis some classifications assign the element to the d-block.

Propiedades físicas

Masa atómica 266.0 u
Fase a STP Solid

Propiedades electrónicas

Electronegatividad 1.3

Configuración electrónica

Configuración [Rn] 5f¹⁴ 7s² 7p¹

Configuración de capas electrónicas

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

Posición en la tabla periódica

Posición de Lawrencio en la tabla periódica Lr

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 Lawrencio?
Lawrencio (Lr) is a chemical element with atomic number 103. It is a solid at standard temperature and pressure, classified as a actínido.
What are the key properties of Lawrencio?
Lawrencio has an atomic mass of 266.0 u.
What is the electron configuration of Lawrencio?
The electron configuration of Lawrencio is [Rn] 5f14 7s2 7p1. It is in the d-block of the periodic table.
What is the electronegativity of Lawrencio?
Lawrencio has an electronegativity of 1.3 on the Pauling scale.