| 1. | Samarium can also be obtained by reducing its oxide with lanthanum.
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| 2. | Examples include : rubidium, barium, uranium, and lanthanum.
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| 3. | Lanthanum is separated as a double salt with ammonium nitrate by crystallization.
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| 4. | More economically viable alloys using mischmetal instead of lanthanum were soon developed.
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| 5. | This version was higher in lanthanum and lower in neodymium.
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| 6. | Monazite is an important ore for thorium, lanthanum, and cerium.
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| 7. | He discovered the elements lanthanum, erbium and terbium.
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| 8. | Cerium hexaboride, like lanthanum hexaboride, slowly evaporates during the cathode operation.
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| 9. | Giesel isolated from pitchblende a lanthanum-containing fraction which showed unique properties.
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| 10. | Each test released a plume of dispersed radioactive lanthanum.
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