20 Ca Calcio 40,078 u

Calcio

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Período
4
Grupo
2
Bloque
s-bloque
Fase (STP)
Solid

El calcio es el metal más abundante del cuerpo humano. Es esencial para los huesos, los dientes y la señalización celular.

Apariencia: Dull gray, silver

Acerca de Calcio

Calcium is an alkaline earth metal of atomic number 20 and atomic mass 40.078, a dull gray solid that melts at 1115 K. Two valence electrons ([Ar] 4s2) give it an electronegativity of 1.00 and a first ionization energy of 590 kJ/mol, and it readily forms a doubly charged ion. Humphry Davy isolated the metal in 1808. Calcium is the most abundant metal in the human body, providing the structural mineral of bones and teeth and serving as a signaling ion within cells. In nature it occurs in minerals rather than as the free metal. The element sits in group 2, period 4, below magnesium.

Propiedades físicas

Masa atómica 40.078 u
Densidad 1.55 g/cm³
Punto de fusión 841.9 °C
Punto de ebullición 1483.8 °C
Fase a STP Solid
Radio atómico 194.0 pm

Propiedades electrónicas

Electronegatividad 1.0
Energía de ionización 589.8 eV
Afinidad electrónica 2.37 eV
Electrones de valencia 2

Configuración electrónica

Configuración [Ar] 4s²

Configuración de capas electrónicas

Configuración de capas electrónicas de Calcio Ca 2e⁻ 8e⁻ 8e⁻ 2e⁻
Estructura de capas electrónicas de Calcio: electrones por capa.
Capa Electrones
1 (K) 2
2 (L) 8
3 (M) 8
4 (N) 2

Posición en la tabla periódica

Posición de Calcio en la tabla periódica Ca

Descubrimiento

Descubierto por: Humphry Davy
Año: 1808

Compuestos que contienen Calcio

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Frequently Asked Questions

What is Calcio?
Calcio (Ca) is a chemical element with atomic number 20. It is a solid at standard temperature and pressure, classified as a metal alcalinotérreo.
What are the key properties of Calcio?
Calcio has an atomic mass of 40.078 u, density of 1.55 g/cm³, melting point of 841.9°C, boiling point of 1483.8°C.
What is the electron configuration of Calcio?
The electron configuration of Calcio is [Ar] 4s2. It is in the s-block of the periodic table.
Who discovered Calcio?
Calcio was discovered by Humphry Davy in 1808.
What is the electronegativity of Calcio?
Calcio has an electronegativity of 1.0 on the Pauling scale.