Thursday, 20 December 2012

Lanthanum=اللانثانم


Lanthanum=اللانثانم
اللنثانوم عنصر فلزي
WIKIPEDIA


Lanthanum
La
Greek
λανθάνειν (lanthanein)
to lie hidden

From Greek lanthanein, "to lie (hidden)".


Lanthanum is a chemical element with the symbol La and atomic number 57

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