Loading...
  • hafnium
  • Of course, the easiest thing would be to look in the archives Chadwick results of measurement of the nuclear charge at the platinum, their departur es and decide on the need to work with hafnium, tantalum and lutetium. (blogspot.com)
  • ytterbium
  • All of these researchers found lutetium as an impurity in the mineral ytterbia , which was previously thought to consist entirely of ytterbium. (rug.nl)
  • Atomic Structure
  • While it is true that physicists study atomic structure, and that much of what scientists know today about atoms comes from the work of physicists, atomic studies are even more integral to chemistry than to physics. (encyclopedia.com)
  • Mass
  • If the mass of the nucleus to take primary and secondary chemical properties of the atom, the table of elements atomic weight should be monotonically changed, both horizontally and vertically. (blogspot.com)
  • lanthanides
  • The lutetium atom is the smallest among the lanthanide atoms, due to the lanthanide contraction , and as a result lutetium has the highest density, melting point, and hardness of the lanthanides. (rug.nl)
  • earth's crust
  • Lutetium is not a particularly abundant element, although it is significantly more common than silver in the earth's crust. (rug.nl)
  • Georges Urbain
  • Lutetium was independently discovered in 1907 by French scientist Georges Urbain , Austrian mineralogist Baron Carl Auer von Welsbach , and American chemist Charles James . (rug.nl)
  • Lutetium was discovered and first isolated by Georges Urbain, Carl Auer von Welsbach and Charles James in 1906, all independently of each other. (americanelements.com)
  • Lutetium was discovered in 1907-08 by Austrian chemist Carl Auer von Welsbach and Georges Urbain , working independently. (britannica.com)
  • smallest
  • Nonetheless, much still remains to be explained about the atom - particularly with regard to the smallest items it contains. (encyclopedia.com)
  • The definitions of atoms and elements seems, at first glance, almost circular: an element is a substance made up of only one kind of atom, and an atom is the smallest particle of an element that retains all the chemical and physical properties of the element. (encyclopedia.com)
  • electron
  • After all, the atom cannot be seen, even with electron microscopes - yet its behavior can be studied in terms of its effects. (encyclopedia.com)
  • nucleus
  • That is the atomic number, which coincides, as suggested by the Dutch scientist Antonius Van den Broek, with the magnitude of the positive charge on the nucleus of the atom, became the basis for classification of chemical elements. (blogspot.com)
  • cerium
  • The f-orbital actually starts filling at cerium Ce (Z = 58) and is completely filled at lutetium, Lu (Z = 71) and hence elements from cerium (Z = 58) to Lu (Z = 71) are actually grouped as 4 f block elements. (googlegalaxyscience.com)
  • metallic
  • This paper demonstrates that the metallic bond in the densest packings (volume-centered and face-centered) between the centrally elected atom and its neighbours in general is, probably, effected by 9 (nine) directional bonds, as opposed to the number of neighbours which equals 12 (twelve) (coordination number). (blogspot.com)
  • scientists
  • Many accounts of the atom begin with a history of the growth in scientists' understanding of its structure, but here we will take the opposite approach, first discussing the atom in terms of what physicists and chemists today understand. (encyclopedia.com)