| 11. | Heating the nitrate in air at 400 �C converts it to the white protactinium pentoxide.
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| 12. | The pentoxide can be reduced to antimony metal by heating with hydrogen or potassium cyanide.
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| 13. | This can cause some conversion of amorphous tantalum pentoxide to the more conductive crystalline form.
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| 14. | Shcherbinaite, a naturally occurring mineral form of vanadium pentoxide, is named for him.
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| 15. | Both types use niobium pentoxide ( Nb 2 O 5 ) as the dielectric layer.
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| 16. | In niobium electrolytic capacitors the dielectric is niobium pentoxide ( Nb 2 O 5 ).
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| 17. | Vanadium pentoxide is used in ceramics.
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| 18. | It is manufactured industrially on a large scale from phosphorus trichloride and oxygen or phosphorus pentoxide.
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| 19. | Iodine pentoxide decomposes to iodine ( vapor ) and oxygen when heated to about 350 �C.
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| 20. | Besides this pentoxide there is an additional niobium suboxide, niobium dioxde ( NbO 2 ).
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