| 单词 | lanthanide series |
| 释义 | > as lemmaslanthanide series lanthanide series n. the series of elements from lanthanum (or cerium) to lutetium. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > [noun] > groups > lanthanides lanthanide1926 lanthanide series1945 lanthanate1946 1945 G. T. Seaborg in Chem. & Engin. News 23 2192/1 This rare-earth-like series begins with actinium in the same sense that the ‘lanthanide’ series begins with lanthanum. On this basis it might be termed the ‘actinide’ series. 1958 R. D. Connor in O. R. Frisch Nucl. Handbk. iv. §21 The second ‘rare earth’ series starts at actinium and is called the actinide series just as the original series starting at lanthanum is termed the lanthanide series. 1965 B. G. Wybourne Spectrosc. Properties Rare Earths i. 2 As we proceed through the lanthanide series, the nuclear charge, together with the number of 4f-electrons, increases by one at each step. < as lemmas |
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