(redirected fromNoble gases) Thesaurus Medical Encyclopedia noble gas n. Any of the elements in Group 18 of the periodic table, including helium, neon, argon, krypton, xenon, and radon, which are monatomic and with limited exceptions chemically inert. Also calledrare gas. ...
inert gasornoble gas,any of the elements in Group 18 of theperiodic table. In order of increasing atomic number they are:helium,neon,argon,krypton,xenon, andradon. They are colorless, odorless, tasteless gases and were once believed to be entirely inert, i.e., forming no chemical compounds...
They werealso listed under Group 0 in theold periodic table because scientists believed that the gases have zero valence(价)electrons in their outer shell. This was later proven to be untrue when somenoble gas compounds were discovered. 3 Thegases are elements, which share similar properties. ...
Noble Gases (Elements)Book by Thomas, J., Thomas, JensJ. ThomasJens Thomas
The noble gases are a group of non-metals consisting of helium, neon, argon, krypton, xenon and radon. Radon is radioactive. The gases grow denser down the group, because the mass of the atom increases. The elements in Group 0 are: ...
美 英 un.惰性气体 网络稀有气体;贵气体;稀有气体放电时的色光 英汉 网络释义 un. 1. 惰性气体 释义: 全部,惰性气体,稀有气体,贵气体,稀有气体放电时的色光
They are theelementswhich contain more than 4electrons(5 or 6 or 7 electrons) in the outermost energy level. Some of them aresolidsand others are gases except bromine (Br) which is the only liquidnonmetallic element. They have no luster. ...
Unlike most other trace elements whose behavior can be understood from consideration of crystal-melt equilibria, the noble gases may also be partitioned into a magmatic vapor phase. This complicates the interpretation of observed variations in noble gas abundances in magmas, but it also means that...
This chapter provides you with a brief but comprehensive insight into the world of noble gases. You read correctly: The representatives of this group are so named because they hardly or do not react at all with other elements or compounds. Nevertheless, they offer highly interesting insights and...
3 the gases are elements, which share similar properties. these properties include being monoatomic, colorless, odorless, being able to conduct electricity, and having low chemical reactivity. noble gases include helium, neon, argon, krypton, xenon and radon. these are all found in group 18, in...