85 At Astato 210,0 u

Astato

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Período
6
Grupo
17
Bloque
p-bloque
Fase (STP)
Solid

El astato es el elemento natural más raro de la Tierra. En cualquier momento existen apenas unos 25 gramos en la corteza.

Acerca de Astato

No element occurs less abundantly in nature than astatine. Estimates place the total quantity present in the crust at roughly 25 grams at any given moment, the whole of it produced continuously by the decay of heavier nuclides. Astatine holds atomic number 85 and a relative atomic mass of 210.0, and its [Xe] 4f14 5d10 6s2 6p5 configuration makes it the heaviest halogen in group 17 of period 6. The Pauling electronegativity is 2.2, the lowest of the halogens, and the element is a solid at standard conditions rather than the volatile species its lighter relatives form. Because samples large enough to see have never been assembled, much of what is known about astatine chemistry rests on tracer-scale experiments.

Propiedades físicas

Masa atómica 210.0 u
Fase a STP Solid

Propiedades electrónicas

Electronegatividad 2.2

Configuración electrónica

Configuración [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁵

Configuración de capas electrónicas

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

Posición en la tabla periódica

Posición de Astato en la tabla periódica At

Bloque y período

Bloque

s p d f

Período

1 2 3 4 5 6 7

Tabla Periódica

Lantánidos Actínidos

Más Halógeno

9 F Flúor 17 Cl Cloro 35 Br Bromo 53 I Yodo

Frequently Asked Questions

What is Astato?
Astato (At) is a chemical element with atomic number 85. It is a solid at standard temperature and pressure, classified as a halógeno.
What are the key properties of Astato?
Astato has an atomic mass of 210.0 u.
What is the electron configuration of Astato?
The electron configuration of Astato is [Xe] 4f14 5d10 6s2 6p5. It is in the p-block of the periodic table.
What is the electronegativity of Astato?
Astato has an electronegativity of 2.2 on the Pauling scale.