| 41. | He was assigned to do ultraviolet spectroscopy of chemical elements.
|
| 42. | An apple contains 26 chemical elements and there are about 5000 kinds of apples.
|
| 43. | The chemical element rutherfordium ( element 104 ) was named after him in 1997.
|
| 44. | During fusion reactions, the nuclei of lighter chemical elements fuse to create heavier elements.
|
| 45. | The primary chemical element in these compounds is carbon.
|
| 46. | A . The three newest chemical elements, all discovered in Germany, don't yet have names.
|
| 47. | The machine produces oxygen by breaking down waste water into its two basic chemical elements.
|
| 48. | The whole periodic table of chemical elements went up in the air with the explosion,
|
| 49. | This article is about a rare synthetic chemical element.
|
| 50. | What is : Category : Chemical elements doing here?
|
