88 Ra Radio 226,0 u

Radio

Período
7
Grupo
2
Bloque
s-bloque
Fase (STP)
Solid

El radio es un metal alcalinotérreo radiactivo descubierto por Marie y Pierre Curie. Emite un tenue brillo azul debido a su intensa radiactividad.

Acerca de Radio

The isolation of radium by Marie and Pierre Curie gave radioactivity its first widely recognised chemical subject. The element occupies atomic number 88 with a relative atomic mass of 226.0, and its [Rn] 7s2 configuration places it in group 2 of period 7 as the heaviest alkaline earth metal. Its electronegativity is 0.9 and it is a solid at standard temperature and pressure. Radioactivity in radium is intense enough to excite the surrounding air and the compound matrix, which is why preparations of the element glow with a faint blue light without any external stimulus. That luminescence, once exploited commercially in self-luminous paints, is now understood as a direct visual signature of the ionising radiation that makes the element hazardous to handle.

Propiedades físicas

Masa atómica 226.0 u
Fase a STP Solid

Propiedades electrónicas

Electronegatividad 0.9

Configuración electrónica

Configuración [Rn] 7s²

Configuración de capas electrónicas

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

Posición en la tabla periódica

Posición de Radio en la tabla periódica Ra

Bloque y período

Bloque

s p d f

Período

1 2 3 4 5 6 7

Tabla Periódica

Lantánidos Actínidos

Reacciones con Ra

Desintegración alfa de radio-226

²²⁶Ra → ²²²Rn + ⁴He

Nuclear

Desintegración alfa de torio-232

²³²Th → ²²⁸Ra + ⁴He

Nuclear

Más Metal Alcalinotérreo

4 Be Berilio 12 Mg Magnesio 20 Ca Calcio 38 Sr Estroncio 56 Ba Bario

Frequently Asked Questions

What is Radio?
Radio (Ra) is a chemical element with atomic number 88. It is a solid at standard temperature and pressure, classified as a metal alcalinotérreo.
What are the key properties of Radio?
Radio has an atomic mass of 226.0 u.
What is the electron configuration of Radio?
The electron configuration of Radio is [Rn] 7s2. It is in the s-block of the periodic table.
What is the electronegativity of Radio?
Radio has an electronegativity of 0.9 on the Pauling scale.