单词 | niton |
释义 | nitonn. Chemistry. Now historical. A former name for: the element radon. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > noble gases > radon > [noun] niton1911 radon1918 1911 R. W. Gray & W. Ramsay in Proc. Royal Soc. A. 84 550 To show its relation to gases of the argon series, it should receive a similar name... The name ‘niton’, Nt, which has been used in this paper is suggested as sufficiently distinctive. 1926 G. Birtwistle Quantum Theory of Atom xv. 154 The conclusions..agree with Bohr's general scheme, which gives niton orbits up to quantum number 6. 1947 Sci. News 5 157 In the six years 1894–1900 there were added to the periodic table five new elements, constituting a group soon to be completed by niton (the radioactive emanation). 1984 N. N. Greenwood & A. Earnshaw Chem. of Elements (1986) xviii. 1043 Element 86..is a short-lived, radioactive element, formerly known as radium-emanation or niton. This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022). < n.1911 |
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