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 ...

More than 75 years after its initial discovery, scientists have created an organometallic molecule containing the ...

The periodic table of elements (often known simply as the periodic ... also a hot air balloon enthusiast and once took off on a solo voyage with no concrete idea of how he would land.) ...

In this periodic table of elements quiz, you have 10 minutes to name as many elements as you can, given only their symbol, ...

For the last fifty or so years, the periodic table has been incomplete. Elements after uranium on the periodic table have been synthesized for the past few decades, but there were always a few ...

Mendeleev countered this somewhat in his book The Principles of Chemistry in 1891: "I consider it well to observe that no ... Elements' in his place. Mendeleev’s lecture described in very technical ...

Image caption, The element germanium was discovered in 1886. Its properties were similar to the predicted ones of Mendeleev’s ‘eka-silicon’. The modern periodic table has no gaps and has ...

There is no experimental data for francium ... Electronegativity and ionization energy follow the same periodic table trend. Elements that have low ionization energies tend to have low ...

Image caption, The element germanium was discovered in 1886. Its properties were similar to the predicted ones of Mendeleev’s ‘eka-silicon’. The modern periodic table has no gaps and has ...