Lanthanum (La) - 57 on the Periodic Table | Periodic Table

Standard IUPAC: Lanthanum • Symbol: La • Atomic Mass: 138.90547 u

Quick Factsheet: Lanthanum (symbol La, atomic number 57) is element 57 on the periodic table of elements. It has a standard atomic weight of 138.90547 u and an electron configuration of [Xe] 6s2 5d1. On the periodic table, Lanthanum is classified in period 6 and group Main.

1. Periodic Table Position of Lanthanum (57 on the Periodic Table)

Element Lanthanum has atomic number Z = 57, meaning it contains 57 protons in its atomic nucleus and 57 electrons in its neutral state. On the standard periodic table of elements, Lanthanum is located in period 6 and group Main.

2. Electron Configuration & Oxidation States (Lanthanum Charges & Configuration)

Full Electron Configuration: [Xe] 6s2 5d1

Common Oxidation States (Charges): 2,3c

3. Physical Properties & Atomic Mass (Lanthanum Atomic Mass)

Element Lanthanum has a standard atomic weight of 138.90547 u. Its melting point is 1193. K and boiling point is 3737. K. The Pauling electronegativity value is 1.10.

Comprehensive chemical properties and data for Lanthanum (La, Z=57).

Explore interactive 3D electron orbitals, isotopes, and properties on the periodic table: Open on Interactive Table 🚀

4. Related Elements in the Same Chemical Family

Ce (Z=58) Pr (Z=59) Nd (Z=60) Pm (Z=61) Sm (Z=62) Eu (Z=63)

5. Frequently Asked Questions about Lanthanum (FAQ)

What is the chemical symbol and atomic number of Lanthanum?

The chemical symbol of Lanthanum is La and its atomic number is 57.

What is the atomic mass and electron configuration of Lanthanum?

Lanthanum has a standard atomic mass of 138.90547 u and ground-state electron configuration of [Xe] 6s2 5d1.

What periodic table group and period does Lanthanum belong to?

Lanthanum is located in period 6 and group Main on the periodic table of elements.

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