Hamerla, R. (2003). "Edward Williams Morley and the Atomic Weight of Oxygen; the Death of Prout's Hypothesis Revisited", Annals of Science 60(4): 351-372.Hamerla RR (2003) Edward williams morley and the atomic weight of oxygen: the death of prout’s hypothesis revisited. Ann Sci 60...
Atomic number 8; atomic weight 15.9994; melting point -218.79°C; boiling point -182.9°C; gas density at 0°C 1.429 grams per liter; valence 2. See Periodic Table. [French oxygène : Greek oxus, sharp, acid; see ak- in Indo-European roots + French -gène, -gen.] ox′y·gen′ic...
【题目】Theatomicweightofoxygenis___than___ofthehydrogen. A.15timesheavier;that B.15timesheavier:those C.16timesasheavier;that D.16timesasheavy;those 试题答案 在线课程 【答案】A 【解析】 试题分析:考查倍数表达法。句意:氧原子是氢原子重量的16倍。is16timeshavier是倍数表达法,that代指weight,可知...
atomic number8 atomic weight15.9994 melting point−218.4 °C (−361.1 °F) boiling point−183.0 °C (−297.4 °F) density (1 atm, 0 °C)1.429 g/litre oxidation states−1, −2, +2 (in compounds with fluorine) electron config.1s22s22p4 ...
Atomic Weight:15.9994 Discovered By:Credit for the discovery of oxygen is usually given to Carl Wilhelm Scheele. However, there is evidence credit should be given to the Polish alchemist and physician Michael Sendivogius. Sendivogius' 1604 workDe Lapide Philosophorum Tractatus duodecim e naturae fon...
Atomic Number (number of protons in the nucleus): 8 Atomic Symbol (on the Periodic Table of Elements): O Atomic Weight (average mass of the atom): 15.9994 Density: 0.001429 grams per cubic centimeter Phase at Room Temperature: Gas
Oxygen is a natural gaseous element with an atomic number of 8 and an atomic weight of 15.96. In the periodic table, it belongs to the chalcogens. It is a reactive nonmetal with an electron configuration of He 2s2 2p4. It is capable of combining with all elements, with the exception ...
σ overlap of the two atomic 2p orbitals that lie along the O–O molecular axis and π overlap of two pairs of atomic 2p orbitals perpendicular to the O–O molecular axis, and then cancellation of contributions from the remaining two 2p electrons after their partial filling of the π* orbit...
Calculate the equivalent weight of oxygen. Weight of metal oxide (w2) (grams) = 25 Weight of metal (w1) (grams) = 20 Solution: Apply Formula: W = (w2 - w1) grams Ew=[w2 / (w2 - w1)] * atomic weight of oxygen Weight of oxygen (W) = 5 Equivalent weight (Ew) = 40 Useful...
Element 8, atomic weight 15.9994, a colorless, odorless gas that makes up about 1/5 of the earth's atmosphere and (in combined form) 8/9ths of earth's oceans and almost half of the earth's crust. The name is derived from the French oxygène, which means "acid generating". A gas ...