The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

Scientists have discovered a new way of creating superheavy elements by firing supercharged ion beams at dense atoms. The ...

Just four years before Mendeleev announced his periodic table, Newlands noticed that there were similarities between elements with atomic weights that differed by seven. He called this The Law of ...

They include lithium, sodium and potassium, and are placed in the first vertical column on the left of the periodic table. All the Group 1 elements are very reactive, and all react with water to ...

in an attempt to memorise some of the 118 elements. This year, the periodic table of chemical elements celebrates its 150th birthday. As the candles on the cake are lit, it's time to test your ...

For example, calcium and phosphorus form a strong foundation for our bones and teeth, while potassium ... elements to function properly. These are almost one-quarter of the periodic table and ...

Players read questions about energy levels and score points by picking the correct element as the answer ... the next electron goes into the fourth level. 4th Period: Potassium and Calcium—Electrons ...