Lantanum: Perbedaan antara revisi
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{{Kotak info lantanum}}
{{unsur|Lantanum|La|57}} Namanya berasal dari [[bahasa Yunani]] ''lanthanein'' yang artinya "tersembunyi". Unsur ini sering dikelompokkan sebagai [[lantanida]] dan bersifat sangat reaktif.
==Karakteristik==
===Fisik===
Lantanum adalah elemen dan prototipe pertama dari seri lantanida. Dalam tabel periodik, ia muncul di sebelah kanan [[logam alkali tanah]] [[barium]] dan di sebelah kiri serium lantanida. Lanthanum umumnya dianggap sebagai elemen blok-f pertama oleh penulis yang menulis tentang subjek tersebut.<ref name="Fluck">{{Cite journal |last=Fluck |first=E. |year=1988 |title=New Notations in the Periodic Table |url=http://www.iupac.org/publications/pac/1988/pdf/6003x0431.pdf |url-status=live |journal=[[Pure and Applied Chemistry|Pure Appl. Chem.]] |volume=60 |issue=3 |pages=431–36 |doi=10.1351/pac198860030431 |archive-url=https://web.archive.org/web/20120325152951/http://www.iupac.org/publications/pac/1988/pdf/6003x0431.pdf |archive-date=25 March 2012 |access-date=24 March 2012 |s2cid=96704008}}</ref><ref>{{Cite book |last=[[Lev Landau|L. D. Landau]], [[Evgeny Lifshitz |title=Quantum Mechanics: Non-Relativistic Theory |publisher=[[Pergamon Press]] |year=1958 |edition=1st |volume=3 |pages=256–7 |E. M. Lifshitz]]}}</ref><ref name="Jensen1982">{{Cite journal |last=William B. Jensen |author-link=William B. Jensen |year=1982 |title=The Positions of Lanthanum (Actinium) and Lutetium (Lawrencium) in the Periodic Table |journal=J. Chem. Educ. |volume=59 |issue=8 |pages=634–636 |bibcode=1982JChEd..59..634J |doi=10.1021/ed059p634}}</ref><ref name="Jensen2015">{{Cite journal |last=Jensen |first=William B. |date=2015 |title=The positions of lanthanum (actinium) and lutetium (lawrencium) in the periodic table: an update |url=https://link.springer.com/article/10.1007/s10698-015-9216-1 |journal=Foundations of Chemistry |volume=17 |pages=23–31 |doi=10.1007/s10698-015-9216-1 |access-date=28 January 2021 |s2cid=98624395}}</ref><ref name="2021IUPAC">{{Cite journal |last=Scerri |first=Eric |date=18 January 2021 |title=Provisional Report on Discussions on Group 3 of the Periodic Table |journal=Chemistry International |volume=43 |issue=1 |pages=31–34 |doi=10.1515/ci-2021-0115 |s2cid=231694898}}</ref>
== Sejarah ==
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