| 41. | The amorphous allotrope is a brown powder.
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| 42. | Examples of solid elemental insulators are diamond ( an allotrope of carbon ) and sulfur.
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| 43. | :Diamond is an allotrope of carbon.
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| 44. | Although oxygen is normally a diatomic gas, oxygen can form an allotrope known as ozone.
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| 45. | In addition, the element sulfur forms octatomic S 8 molecules as its most stable allotrope.
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| 46. | Allotropes are different chemical forms of the same element ( not containing any other element ).
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| 47. | A real question might be whether Co 3 is a naturally-occurring allotrope of cobalt.
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| 48. | It is certainly not an allotrope.
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| 49. | Early workers identified some forms that have later proved to be single or mixtures of allotropes.
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| 50. | At least five allotropes are uniquely formed at high pressures, two of which are metallic.
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