| 1. | Uranium ores from Ontario have occasionally yielded yttrium as a byproduct.
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| 2. | With the addition of oxalic acid, the yttrium oxalate precipitates.
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| 3. | There are 13 boron sites B1 B13 and one yttrium site.
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| 4. | When combined with yttrium, it forms highly magnetic compounds.
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| 5. | Yttrium and terbium are named after the village of Ytterby in Sweden.
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| 6. | Cyclooctatetraene forms organometallic complexes with some metals, including yttrium and lanthanides.
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| 7. | Elemental yttrium was first isolated in 1828 by Friedrich W�hler.
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| 8. | Water readily reacts with yttrium and its compounds to form.
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| 9. | Exposure to yttrium compounds in humans may cause lung disease.
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| 10. | The concentration of yttrium was and the cadmium concentration was.
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