11 Na Sodium 22,99 u

Sodium

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Période
3
Groupe
1
Bloc
s-bloc
Phase (STP)
Solid

Sodium is a highly reactive alkali metal essential for biological function. Its compound sodium chloride (table salt) is vital for life.

Apparence: Silvery-white metallic

Propriétés physiques

Masse atomique 22.99 u
Densité 0.971 g/cm³
Point de fusion 97.8 °C
Point d'ébullition 882.9 °C
Phase à STP Solid
Rayon atomique 190.0 pm

Propriétés électroniques

Électronégativité 0.93
Énergie d'ionisation 495.8 eV
Affinité électronique 52.8 eV
Électrons de valence 1

Configuration électronique

Configuration [Ne] 3s¹

Electron Shell Configuration

Sodium electron shell configuration Na 2e⁻ 8e⁻ 1e⁻

Position in Periodic Table

Sodium position in the periodic table Na

Découverte

Découvert par: Humphry Davy
Année: 1807

Compounds Containing Sodium

Plus de Métal Alcalin

Frequently Asked Questions

What is Sodium?
Sodium (Na) is a chemical element with atomic number 11. It is a solid at standard temperature and pressure, classified as a métal alcalin.
What are the key properties of Sodium?
Sodium has an atomic mass of 22.99 u, density of 0.971 g/cm³, melting point of 97.8°C, boiling point of 882.9°C.
What is the electron configuration of Sodium?
The electron configuration of Sodium is [Ne] 3s1. It is in the s-block of the periodic table.
Who discovered Sodium?
Sodium was discovered by Humphry Davy in 1807.
What is the electronegativity of Sodium?
Sodium has an electronegativity of 0.93 on the Pauling scale.