8 O Oxygen 15,999 u

Oxygen

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Período
2
Grupo
16
Bloque
p-bloque
Fase (STP)
Gas

Oxygen is the third most abundant element in the universe and essential for respiration. It makes up about 21% of Earth's atmosphere.

Apariencia: Colorless gas (pale blue as liquid)

Propiedades físicas

Masa atómica 15.999 u
Densidad 0.001429 g/cm³
Punto de fusión -218.8 °C
Punto de ebullición -183.0 °C
Fase a STP Gas
Radio atómico 73.0 pm

Propiedades electrónicas

Electronegatividad 3.44
Energía de ionización 1313.9 eV
Afinidad electrónica 141.0 eV
Electrones de valencia 6

Configuración electrónica

Configuración [He] 2s² 2p⁴

Electron Shell Configuration

Oxygen electron shell configuration O 2e⁻ 6e⁻

Position in Periodic Table

Oxygen position in the periodic table O

Descubrimiento

Descubierto por: Carl Wilhelm Scheele
Año: 1771

Compounds Containing Oxygen

Más No Metal

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Frequently Asked Questions

What is Oxygen?
Oxygen (O) is a chemical element with atomic number 8. It is a gas at standard temperature and pressure, classified as a no metal.
What are the key properties of Oxygen?
Oxygen has an atomic mass of 15.999 u, density of 0.001429 g/cm³, melting point of -218.8°C, boiling point of -183.0°C.
What is the electron configuration of Oxygen?
The electron configuration of Oxygen is [He] 2s2 2p4. It is in the p-block of the periodic table.
Who discovered Oxygen?
Oxygen was discovered by Carl Wilhelm Scheele in 1771.
What is the electronegativity of Oxygen?
Oxygen has an electronegativity of 3.44 on the Pauling scale.