| 41. | Secondary commodities included gold, silver, copper and bismuth.
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| 42. | The article on bismuth says that it is more or less nontoxic.
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| 43. | The oxygen atoms are tetrahedrally coordinated by four bismuth atoms.
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| 44. | More specifically bismuth vanadate is a mixed-metal oxide.
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| 45. | Six oxygen atoms are coordinated octahedrally to each bismuth atom.
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| 46. | It undergoes alpha decay to the extremely long-lived bismuth-209.
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| 47. | Bismuth was first discovered by an alchemist in 1400.
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| 48. | Bismuth is not known to have a biological role.
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| 49. | Only one person has ever been reported to have died from bismuth poisoning.
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| 50. | The bismuth phosphate was next re-precipitated leaving the plutonium in solution.
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