9 F Flúor 18,998 u

Flúor

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Período
2
Grupo
17
Bloque
p-bloque
Fase (STP)
Gas

El flúor es el elemento más electronegativo y reactivo de todos. Se emplea en pasta de dientes, teflón y refrigerantes.

Apariencia: Pale yellow gas

Acerca de Flúor

No element is more electronegative or more chemically aggressive than fluorine, which tops the electronegativity scale at 3.98 and reacts with almost every other substance. It is a pale yellow halogen of atomic number 9 and atomic mass 18.998, existing as a gas that condenses at 85 K. Seven valence electrons ([He] 2s2 2p5) leave it one short of a filled shell, driving a strong pull on electrons and a first ionization energy of 1681 kJ/mol. Henri Moissan first isolated the reactive element in 1886, a feat that had defeated earlier chemists. Fluorine and its compounds appear in toothpaste, in the polymer Teflon, and in refrigerants. It heads group 17, period 2.

Propiedades físicas

Masa atómica 18.998 u
Densidad 0.001696 g/cm³
Punto de fusión -219.7 °C
Punto de ebullición -188.1 °C
Fase a STP Gas
Radio atómico 64.0 pm

Propiedades electrónicas

Electronegatividad 3.98
Energía de ionización 1681.0 eV
Afinidad electrónica 328.0 eV
Electrones de valencia 7

Configuración electrónica

Configuración [He] 2s² 2p⁵

Configuración de capas electrónicas

Configuración de capas electrónicas de Flúor F 2e⁻ 7e⁻
Estructura de capas electrónicas de Flúor: electrones por capa.
Capa Electrones
1 (K) 2
2 (L) 7

Posición en la tabla periódica

Posición de Flúor en la tabla periódica F

Descubrimiento

Descubierto por: Henri Moissan
Año: 1886

Compuestos que contienen Flúor

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Frequently Asked Questions

What is Flúor?
Flúor (F) is a chemical element with atomic number 9. It is a gas at standard temperature and pressure, classified as a halógeno.
What are the key properties of Flúor?
Flúor has an atomic mass of 18.998 u, density of 0.001696 g/cm³, melting point of -219.7°C, boiling point of -188.1°C.
What is the electron configuration of Flúor?
The electron configuration of Flúor is [He] 2s2 2p5. It is in the p-block of the periodic table.
Who discovered Flúor?
Flúor was discovered by Henri Moissan in 1886.
What is the electronegativity of Flúor?
Flúor has an electronegativity of 3.98 on the Pauling scale.