Search results for "Period 1 element" - New World Encyclopedia
From New World Encyclopedia
- the Congo have been found to contain the element at a concentration of about ... The existence of an element between thorium and uranium was predicted ...9 KB (1,150 words) - 08:16, 2 December 2022
- The main group elements of the periodic table are groups 1, 2 and ... ==Group 1 (Alkali Metals)== The alkali metals are the series of elements ...30 KB (4,368 words) - 00:41, 24 November 2022
- number 68) is a silvery metallic rare earth element. The term "rare ... Like other rare earths, this element is never found as a free element ...11 KB (1,419 words) - 19:19, 13 February 2024
- 89) is a silvery, radioactive, metallic element. Due to its intense radioactivity ... In the periodic table, actinium is situated in period seven and group ...7 KB (911 words) - 05:39, 15 June 2023
- 93) is a silvery radioactive metallic element, belonging to the actinide ... neutrons. It was the first transuranium element produced synthetically and ...11 KB (1,451 words) - 16:21, 11 November 2022
- Dysprosium (chemical symbol Dy, atomic number 66) is a rare earth ... Dysprosium is never encountered as a free element but is found in ...10 KB (1,193 words) - 17:27, 12 February 2024
- (chemical symbol Pr, atomic number 59) is a soft silvery metallic ... "didymium" (meaning "twin element") from lanthana. It ...12 KB (1,535 words) - 22:14, 30 November 2022
- It is the only liquid nonmetallic element at room temperature and ... Given its reactivity, bromine is not found as a free element in nature ...10 KB (1,346 words) - 04:33, 22 November 2023
- in 1845–1861. The name of the element is derived from the name of ... Samarium is an inner transition metal (or lanthanide) that lies in ...11 KB (1,437 words) - 02:07, 23 December 2022
- Promethium (chemical symbol Pm, atomic number 61) is a metallic element ... in 1914, who found a gap for a missing element which would have atomic ...11 KB (1,429 words) - 23:55, 1 December 2022
- Scandinavia and elsewhere. It is a rare element that chemically resembles ... This element is mainly used in alloys with aluminum for minor components ...12 KB (1,615 words) - 17:06, 25 January 2023
- in air. It was the "secret" element used in the production of ... and uranium ores, but never as a free element. It is commercially recovered ...12 KB (1,634 words) - 21:34, 4 June 2023
- number 64) is a silvery white metallic element and a member of the lanthanide ... In nature, gadolinium is found not as the free element but in various ...13 KB (1,750 words) - 07:39, 15 April 2024
- as primary sources of extraction of the element or its compounds. Rather ... Before gallium was discovered, the element and many of its properties ...15 KB (2,122 words) - 04:06, 18 April 2024
- toxic, and highly radioactive chemical element. It is found in small amounts ... A very rare element in nature, polonium is found in uranium ores at ...11 KB (1,554 words) - 08:39, 24 November 2022
- This element has many isotopes, of which the single stable isotope ... lines were produced by a hitherto unknown element, which they named cesium ...14 KB (1,931 words) - 00:09, 4 December 2023
- is not an economically viable source of the element. Commercial rhenium ... meaning "Rhine." Before this element was discovered, its existence ...10 KB (1,384 words) - 20:01, 8 December 2022
- number 52) is a relatively rare chemical element that belongs to the group ... This element is primarily used in alloys. For instance, when added ...14 KB (1,880 words) - 05:35, 27 February 2023
- 57) is a soft, silvery white metallic element. Found in combination with ... range of applications. For instance, the element is used in motion-picture ...11 KB (1,398 words) - 22:23, 22 October 2022
- number 88) is an extremely radioactive element that is classified as an ... care. Exposure to radiation from this element can lead to sores on the ...13 KB (1,820 words) - 22:47, 7 December 2022
