THE periodic table on the WWW [

Binary compounds including halogens (called halides), oxygen (called oxides), hydrogen (called hydride), and other known compounds

Hassium was discovered by Peter Armbruster, Gottfried Münzenber, and colleagues. In 1984, GesellschaftfürSchwerionenforschung (GSI) in Darmstadt, Germany. Origin of name: The origin of the name is Latin "Hassias", "Hess", Germany.

Separation: Some atoms of element 108, Hassium is never made. The first atom is made up of a lead, a fusion of 208 Pb isotope with iron, and a nuclear reaction involving one of 58 Fe.

The number of observable observables has never been reached or achieved. This is because Hassium disintegrates very rapidly due to the emission of alpha particles.

2 History of the Periodic Table Mendeleev places the elements in the world's first periodic table and Mendeleev increases the atomic number and increases atomic weight by comparing the number of mutually reactive elements to the world's first periodic table Place elements in. Quality by comparing the number of elements that react with each other 3 The modern periodic table is different from the Mendeleev table - he does not know that protons and electrons are different from the Mendeleev table - he knows that protons and electrons I do not know to increase the number of atoms. Mass proton number Proton number Electron number Electronic number It is not mass increasing atom number than electron number

Please look carefully at periodic table A. The history of the boundary table Mendeleev arranged these elements in the world's first periodic table, Mendeleev arranged

In the standard period table, the elements are listed in ascending order of element number Z (the number of protons in the nucleus). When a new electron shell has its first electron, a new line (cycle) begins. Columns (groups) are determined by the electronic configuration of the atoms and elements with the same number of electrons in a particular subshell are in the same column (eg oxygen and selenium are in the outermost p subshell so that the same column ). There are four electrons in the center. Elements with similar chemical properties generally belong to the same family of the periodic table, but in some aspects of the f block and d block elements of the same period tend to have similar properties. Therefore, it is relatively easy to predict the chemical nature of an element if you know the nature of the element around the element.