Group VIIIA elements

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... 

Ans. Group VIIIA element (also referred to as an inert gas or noble gas)... 

The bivalent substitutional impurities of group-IVA elements such as C, Si, Ge, Sn, or Pb also produced double shallow acceptor levels with the ionization energy of 0.721 eV for C, 0.919 eV for Si, 0.792 eV for Ge, 1.034 eV for Sn, and 1.283 eV for Pb, respectively. Some bivalent substitutional impurities of another type of group-VIIIA elements such as Ne, Ar, Kr, or Xe did not produce any energy levels in the band gap by the substituting host O atom. As expected, the acceptor levels produced by the impurities of group-VA and -IVA elements at the O site were single or double acceptors, respectively. Quantitave analysis of these shallow acceptors produced by the monovalent and bivalent substitutional impurities will be made in Section 4.2. 

Until the early 1960s, chemists believed that the Group VIIIA elements would not combine chemically with any elements. In 1962, Neil Bartlett (1932- ) and his research group at the University of British Columbia were studying the powerful oxidizing agent PtFg. They... 

For Group VIIIA elements, the noble gases, a molecule contains only one atom, and so an atom and a molecule are the same (see Figure 2-1). 

For a similar reason, the Group VIIIA elements also do not form stable negative ions.)... 

The Group VIIIA elements exist as gases consisting of uncombined atoms. For a long time these elements were thought to be chemically inert, because no compounds were known. Then, in the early 1960s several compounds of xenon were prepared. Now compounds are also known for krypton and radon. These elements are known as the noble gases because of their relative unreactivity. 

Noble gases (inert gases rare gases) the Group VIIIA elements all are gases consisting of uncombined atoms. They are relatively unreactive elements. (8.7)... 

Noble gases (Section 1 1) The elements in group VIIIA of the penodic table (helium neon argon krypton xenon radon)... 

The inner electrons, those below the valence electrons, are arranged as is the noble gas element (Group VIIIA) before the element under consideration. If we were to consider titanium (Ti, Z = 22), the electron configuration could be expressed as [ Ar 13c/24.s2. Note that, although the Aufbau principle indicates the 4s filling before the 3d, it is common practice to present the electron configuration in numerical order with respect to n, rather than the... 

Group 18 (VIIIA) elements are known as noble gases. Noble gases do not combine in nature with any other elements. 

Inorganic Chemistry 2.8 Group VTTTA Elements Noble (Inert) Gases - He, Ne, Ar, Kr, Xe, Rn Table 2.1 J. Group VIIIA Properties... 

Xenon is a noble gas. The term noble gas is used to describe the elements in Group 18 (VIIIA) of the periodic table. The periodic table is a chart that shows how chemical elements are related to one another. Noble gas suggests a group of elements that is too far above other elements to react with them. The noble gases are also called the inert gases. That term has the same meaning. The noble gases react with other elements only under very unusual circumstances. 

Noble (rare) gases Elements of Group VIIIA in the periodic table. 

---