Group 1 elements react with moist air. They are stored in oil to stop air and water vapour coming into contact with them. Moist air reacts with potassium to form potassium oxide. This creates a ...

like atomic mass and chemical symbol. The periodic table’s arrangement also allows scientists to discern trends in element properties, including electronegativity, ionization energy, and atomic radius ...

Chemical Properties. The chemical characteristics of the elements can equally well be studied, for there are the acid- and base-forming elements on the chart, whose zones gradually infiltrate from ...

The group 1 elements react quickly with oxygen in the air at room temperature. Most transition elements react slowly, or not at all, with oxygen at room temperature. Some transition metals react ...

Heavy ligands such as polyoxometalates are opening a new frontier in actinide chemistry. Studying materials that are both ...

predicted the existence and properties of undiscovered elements that would fill the open spaces in his table. Learn more about the periodic table with this selection of educational resources from the ...

60-inch cyclotron. Enough material has been made for chemical studies by tracer technique in the way in which the properties of element 93 (neptunium ; Np) and 94 (plutonium ; Pu) were first ...

For the first time, scientists have characterized a promethium coordination complex, advancing the understanding of ...

The handy visual reference guide organizes known chemical elements in rows and columns, arranged by their atomic number. One never knows when one will need the properties of Rutherfordium in a hurry.

Promethium’s short half-life and lack of stable isotopes makes it difficult to study. In addition, promethium is difficult to ...