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Lanthanum
Element Symbol
Lanthanum has the chemical symbol 'La' and is element 57 on the periodic table. 
Pronunciation Clarity
The word 'lanthanum' is pronounced as ˈlæn.θə.nəm, with stress on the first syllable. 
Practical Uses
Lanthanum is utilized in making camera lenses, telescopes, and studio lighting due to its optical properties. 