The Periodic Table is a well-organized chart that contains all 118 known elements in the universe. These elements are the ...

Silicon (Si) is a metalloid, element number 14 on the periodic table. Like carbon, silicon has four bonding sites, but silicon is more than twice as heavy as carbon. The high melting point of ...

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 ...

The element germanium was discovered in 1886. Its properties were similar to the predicted ones of Mendeleev’s ‘eka-silicon’. The periodic table is a good example of how scientific ideas ...

The element germanium was discovered in 1886. Its properties were similar to the predicted ones of Mendeleev’s ‘eka-silicon’. The periodic table is a good example of how scientific ideas ...

This year marks the 150th anniversary of the publication of Mendeleev’s Periodic Table of Chemical Elements in 1869. In celebration, the United Nations Educational, Scientific, and Cultural ...

This year we celebrate the 150 th anniversary of Mendeleev’s achievement in formulating the structure of the periodic table that we use today. He announced his structure in 1869, but the challenge of ...

Electronegativity, an essential characteristic of all elements in the periodic table, measures an atom's ability to attract electrons towards itself within a chemical bond. This vital theoretical ...