89 Ac Actinio 227,0 u

Actinio

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

El actinio es un elemento radiactivo que brilla en azul en la oscuridad. Es el primer elemento de la serie de los actínidos y se investiga para radioterapia.

Acerca de Actinio

Actinium opens the actinide series and lends the fourteen elements that follow it their collective name. It carries atomic number 89 and a relative atomic mass of 227.0, and its [Rn] 6d1 7s2 configuration places a single d electron above the radon core in period 7 of the f-block. The Pauling electronegativity is 1.1 and the element is a solid under standard conditions. Its radioactivity is intense enough that samples emit a blue glow in darkness, produced as the emitted radiation excites surrounding air. The same decay behaviour has made actinium a subject of medical research, where short-range alpha emission from the element is being investigated as a way of delivering radiation therapy to targeted tissue while sparing the material around it.

Propiedades físicas

Masa atómica 227.0 u
Fase a STP Solid

Propiedades electrónicas

Electronegatividad 1.1

Configuración electrónica

Configuración [Rn] 6d¹ 7s²

Configuración de capas electrónicas

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

Posición en la tabla periódica

Posición de Actinio en la tabla periódica Ac

Bloque y período

Bloque

s p d f

Período

1 2 3 4 5 6 7

Tabla Periódica

Lantánidos Actínidos

Más Actínido

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 99 Es Einstenio

Frequently Asked Questions

What is Actinio?
Actinio (Ac) is a chemical element with atomic number 89. It is a solid at standard temperature and pressure, classified as a actínido.
What are the key properties of Actinio?
Actinio has an atomic mass of 227.0 u.
What is the electron configuration of Actinio?
The electron configuration of Actinio is [Rn] 6d1 7s2. It is in the f-block of the periodic table.
What is the electronegativity of Actinio?
Actinio has an electronegativity of 1.1 on the Pauling scale.