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Lanthanum, Symbol: La

Atomic info:
Element number 57 on the Periodic Table.

Hence, its atomic number = number of (positively charged) protons = 57
It corresponding arrangement or configuration of its (negatively charged) electrons = 2. 8. 18. 18. 9. 2

Refering to the configuration, Lathanum should lie on the 6th row or period of the table.
It lies in the lanthanide series.

Description:
Metal, silvery white
a rare earth metal

Uses:
medicine (lanthanum carbonate), catalysts, additives in glass, hybrid and electric car batteries

 

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  NotaKita.com

Lanthanum, Simbol: La

Maklumat atom:
Elemen / Unsur ke57 dalam Jadual Berkala.

Justeru itu, nombor atom = bilangan 
proton (yang bercas positif ) = 57
Susunan elektron menurut petala = 
2. 8. 18. 18. 9. 2

Menurut konfigurasi atau susunan elektron, Lanthanum sepatutnya berada pada barisan ke6 Jadual Berkala.
Lanthanum berada dalam siri lanthanid.

Huraian:
Logam, putih keperakan
sejenis logam nadir bumi
 
Kegunaan:
perubatan (lanthanum karbonat), 
mangkin, bahan tambah dalam kaca, bateri kereta hibrid dan elektrik