Lanthanum is used in mischmetal, which is an alloy of rare earth metals. Commonly 50% Ce and 25% La with other elements. Mischmetal is...
Atomic # = 57 Atomic weight = 138.906
Lanthanum is used in mischmetal, which is an alloy of rare earth metals. Commonly 50% Ce and 25% La with other elements. Mischmetal is used as the flint in lighters.