| 11. | I mean, zirconia is zirconium oxide ( ZrO 2 ), and zirconium is a metallic element.
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| 12. | Only fluorine is more reactive among non-metallic elements.
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| 13. | A more modern definition is a material that contains metallic and non-metallic elements ( usually oxygen ).
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| 14. | They said they were also questioned about sales of magnesium, a metallic element used in incendiary bombs.
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| 15. | The wooden and metallic elements of the sala are as well as antique as the house itself.
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| 16. | Copper is one of a few metallic elements with a natural color other than gray or silver.
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| 17. | Station columns were made of a blue-gray veined marble reminiscent of the sky with decorative shiny metallic elements.
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| 18. | Aluminium is a light metallic element.
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| 19. | -- Hexavalent chromium : A form of the metallic element chromium found in speciality paints and cement or concrete.
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| 20. | In metallocene names, the prefix before the "-ocene " ending indicates what metallic element is between the Cp groups.
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