Noble element naming

It has been pointed out on a number of occasions that the chemistry of the noble gases resembles in many respects that of its neighboring elements, namely, the halogens. Reasoning based on this analogy led... 

A 6 — c — 12.01 -Carbon - Atomic number Element symbol Atomic weight Element name Noble gases 8A... 

The process of cation exchange is that by which protons and other cations on the surface or within the structure of the support are replaced by cations of the active metal and this leads, with the noble elements of Groups 8-10, first to atomically dispersed species and then, after an optimal calcination and careful reduction with hydrogen, to extremely small metal particles [18], The procedure is especially effective with zeolites. But the introduction of catal Tically active species into the cavities of these materials, as opposed to placing them on their external surface, presents certain difficulties, namely the lack of suitable cations or cationic complexes [18], Nevertheless, different kinds of Au/zeoiite systems have been prepared this way [78-89],... 

The kernel and local electrophilicities at R are always below the global one, as expected from their hierarchical formulae, except for the first period noble element (Ne) and halogen (F) where the values are in reverse order namely... 

Elements combine to form compounds because, as we learned from the Bohr model, only a few elements (namely the noble gases) exist as isolated atoms with stable electron configurations. Elements with unstable electron configurations will usually form compounds with other elements to gain stability. We divide compounds into two types-ionic and molecular-based on whether their constituent elements transfer electrons or share electrons to attain stability. 

When naming a molecular compound, we name each element. The names appear in the same order as they do in the molecular formula. The chemical symbols in the formula are in the order the elements appear on the periodic table. Thus, the element towards the right of the periodic table (excluding the noble gases) will appear towards the right of the formula. If the elements are in the same column, the one nearer the top will be last in the formula. 

While studying radium, Friedrich Ernst Dorn (1848—1916) found that it gave off a radioactive gas that, when studied in more detail, proved to be the sixth noble gas. Dorn was given credit for its discovery in 1900. He called it radon, a variation of the word radium. Sir Wdham Ramsay and R. W. Whytlaw-Gray, who also investigated the properties of radon, called it niton from the Latin word nitens, which means shining. Several other scientists who worked with radon named it thoron because of the transmutation of radon-220 from the decay of thorium. However, since 1923, the gas has been known as radon because it is the radioactive decay gas of the element radium. The name is derived from the Latin word radius, which means ray. ... 

Though sometimes referred to as "rare gases" or "inert gases," these older names are not really accurate because the group 8A elements are neither rare nor completely inert. Argon, for instance, makes up nearly 1% by volume of dry air, and there are several dozen known compounds of krypton and xenon, although none occur naturally. Some properties of the noble gases are listed in Table 6.8. 

A column of the periodic table is called a family. Some families have special names. Group IA elements are called alkali metals, group IIA elements are called alkaline earth metals, group VIIA elements are called halogens, and group VIIIA elements are called the noble gases. The group B elements are called transition elements. Elements with atomic numbers from 58 to 71 are called lanthanides, and elements with atomic numbers from 90 to 103 are called actinides. Families have similar chemical and physical properties. For example, the alkali metals are soft metals at room temperature they are shiny, conduct... 

Since Mendeleev arranged the elements according to their atomic masses, he could not be aware of the lack of noble gases in his table. After the discovery of the noble gases by William Ramsay in the years between 1894 and 1900, an English physicist named Henry Moseley solved the puzzle of the periodic table in 1913. 

The BCNOs, along with the halogens of Group 17 and the noble gases of Group 18, are part of the periodic tables p block. The p block is named after the fact that electrons involved in chemical reactions in these elements come from the p orbital. 

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