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 ...

This leads us to ask an important question: Is there a maximum number of elements included in the periodic table? The answer may be no, and here’s why. For nearly a decade, the seventh period ...

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 ...

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

The seventh row of the table was completed in 2016 when Tennessine, Nihonium, Moscovium, and Oganesson were added. Elements ...

Mendeleev countered this somewhat in his book The Principles of Chemistry in 1891: "I consider it well to observe that no law of nature ... entitled 'The Periodic Law of the Chemical Elements' in his ...

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 ...

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 ...

The least electronegative element is cesium (0.79 on the Pauling scale and left in the second row from the bottom in the periodic table). Note that older texts list both francium and cesium as least ...

The periodic table looks complete ... When technetium, the first human-made element, was created in 1937, “no one knew what use it would be,” says Haba, the nuclear chemist leading the ...