The lanthanide (/ ˈ l æ n θ ə n aɪ d /) or lanthanoid (/ ˈ l æ n θ ə n ɔɪ d /) series of chemical elements [a] comprises at least the 14 metallic chemical elements with atomic numbers 57–70, from lanthanum through ytterbium. In the periodic table, they fill the 4f orbitals.

2024年12月24日 · Lanthanide, any of the series of 15 consecutive chemical elements in the periodic table from lanthanum to lutetium (atomic numbers 57–71). With scandium and yttrium, they make up the rare-earth metals.

2021年2月4日 · Chemists refer to these 15 elements using the symbol Ln. They are called “lanthanides” because they share properties in common with lanthanum. Here is a list of the lanthanides, a look at their common properties, their uses, and other facts.

2023年6月30日 · What causes the Lanthanide Contraction? Why do Lanthanides exhibit strong electromagnetic and light properties? What do the Lanthanides have in common with the Noble Gases?

Lanthanides are metals that are related to each other in how they behave. Most of them slowly turn into their hydroxides when they are placed into water, like the alkali metals. They usually form a coating of oxide when placed in the air, like most metals. Lanthanides, with Scandium and Yttrium, are called rare earth elements.

2019年5月3日 · Learn about the characteristics of elements 57-71 known as the lanthanide elements. Lanthanides are one of the rare earth groups.

2024年4月28日 · Although lanthanoids, scandium, Sc, and yttrium, Y, are sometimes called rare earth elements, they are relatively abundant in the earth’s crust. With the exception of promethium, Pm, which does form a stable isotope, even the least abundant thulium, Tm, and lutetium, Lu, are as abundant as iodine.

2022年12月19日 · Lanthanides are a set of 15 chemical elements whose atomic numbers range from 57 to 71. These are the elements in the periodic table’s f-block of period six. Each of these elements has one valence electron in the 5d shell. The elements have characteristics in common with lanthanum, the group’s initial element.

Lanthanide Series - Elements with atomic numbers from 58 to 71 are called Lanthanides. Understand the concepts of Lanthanide Contraction, Physical, Chemical properties, uses and more.

2019年5月3日 · Key Takeaways: What Are the Lanthanides? The lanthanides are the elements in the top of the two rows located below the main body of the periodic table. While there is disagreement over exactly which elements should be included, many chemists state the lanthanides are elements with atomic numbers 58 through 71.