Search results for "Chemical elements data references" - New World Encyclopedia
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- Mendelevium (chemical symbol Md (formerly Mv), atomic number 101) ... to the more characteristic (for actinide elements) tripositive (III) oxidation ...6 KB (778 words) - 11:41, 29 April 2025
- Astatine (chemical symbol At, atomic number 85) is the rarest naturally ... present in trace amounts in minerals of these elements. ...6 KB (808 words) - 05:08, 18 August 2023
- Einsteinium (chemical symbol Es, atomic number 99) is a synthetic ... four year program of irradiation and then chemical separation from a starting ...7 KB (940 words) - 00:06, 13 February 2024
- Berkelium (chemical symbol Bk, atomic number 97) is a synthetic, radioactive ... * Chemical element * Inner transition metal * Metal * Periodic table ...7 KB (911 words) - 11:01, 28 September 2023
- The ancient Greeks regarded air as one of the four elements. However ... atmosphere have changed over time and the chemical processes that create and ...11 KB (1,481 words) - 06:25, 21 August 2023
- Protactinium (chemical symbol Pa, atomic number 91) is a member of ... * Chemical element * Inner transition metal * Metal * Periodic table ...9 KB (1,150 words) - 11:56, 30 April 2026
- Holmium (chemical symbol Ho, atomic number 67) is a relatively soft ... Of all the naturally occurring elements, holmium has the highest magnetic ...10 KB (1,274 words) - 09:31, 18 July 2024
- Americium (chemical symbol Am, atomic number 95) is a radioactive ... * Chemical element * Inner transition metal * Metal * Periodic table ...9 KB (1,328 words) - 06:50, 25 July 2023
- Thulium (chemical symbol Tm, atomic number 69) is the least abundant ... in the oxides of other rare earth elements (this was the same method ...9 KB (1,135 words) - 23:14, 30 April 2023
- first version of the periodic table of elements. Though there were other ... classic. As he attempted to classify the elements according to their chemical ...13 KB (1,999 words) - 16:30, 29 January 2024
- Ytterbium (chemical symbol Yb, atomic number 70) is a soft silvery ... associated with yttrium or other related elements and is used in certain steels ...11 KB (1,375 words) - 21:33, 4 June 2023
- Neptunium (chemical symbol Np, atomic number 93) is a silvery radioactive ... quickly, one gets nearly pure 237Np by chemical separation of neptunium. ...11 KB (1,451 words) - 23:32, 30 June 2025
- Curium (chemical symbol Cm, atomic number 96) is a radioactive, metallic ... it feasible to study the element's chemical properties. The isotope ...10 KB (1,354 words) - 06:46, 12 January 2024
- Lutetium (chemical symbol Lu, atomic number 71) is a silvery white ... is very difficult to separate from other elements. Consequently, it is also ...11 KB (1,371 words) - 04:10, 27 March 2025
- Erbium (chemical symbol Er, atomic number 68) is a silvery metallic ... It is associated with several other rare earth elements in the mineral ...11 KB (1,419 words) - 19:19, 13 February 2024
- Europium (chemical symbol Eu, atomic number 63) is the most reactive ... * Chemical element * Inner transition metal * Metal * Periodic table ...10 KB (1,254 words) - 04:34, 23 March 2024
- Actinium (chemical symbol Ac, atomic number 89) is a silvery, radioactive ... below the rare earth lanthanum, and its chemical behavior is similar to that ...7 KB (911 words) - 05:39, 15 June 2023
- (chemical symbol Pr, atomic number 59) is a soft silvery metallic ... of Mischmetal, an alloy of rare earth elements in a range of naturally ...12 KB (1,535 words) - 12:09, 14 April 2026
- (luminosity, density, temperature) and chemical composition of celestial ... The availability of accurate observational data (mainly from the observatory ...14 KB (1,947 words) - 18:28, 19 August 2023
- Cesium (also spelled caesium, chemical symbol Cs, atomic number 55 ... observed the spectral lines of several elements. Among these lines they ...14 KB (1,931 words) - 00:09, 4 December 2023
