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 ...

See if you can organize the first 25 elements of the periodic table in order in the quiz below. The periodic table as we know ...

The periodic table’s arrangement also allows scientists to discern trends in element properties, including electronegativity, ionization energy, and atomic radius. Many scientists worked on the ...

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 ...

As the diagram shows, this arrangement means that certain elements with similar properties appear in a vertical line. Although the telluric screw did not correctly display all the trends that were ...

Back in the old days—the really old days—the task of designing materials was laborious. Investigators, over the course of ...

IN 1937, Perrier and Segrè showed that radioactive isotopes of element 43 could be formed by neutron or deuteron bombardment of molybdenum 1. Several chemical properties of element 43 were ...