The periodic table can be read across from left to the ... The first Group 1 element, lithium, has the highest melting point at 180°C. The melting points then get gradually lower, with the ...

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 ...

The Laboratory in Blue Prince is home to two puzzles: the periodic table puzzle and the machine puzzle. Both puzzles are ...

A monthly collaboration between C&EN and Andy Brunning, chemistry educator and author of the popular graphics blog Compound Interest. Download an Updated Periodic Table from ACS Publications Is the ...

Lesson Plans: The Periodic Table and Bonding Download inquiry-based lesson plans ... A monthly collaboration between C&EN and Andy Brunning, chemistry educator and author of the popular graphics blog ...

When you enter the laboratory, you will find a table on the wall in the shape of the periodic table. However, instead of the element, there are numbers in certain squares of the table. While it is ...

You interact with about two-thirds of the elements of the periodic table every day. Some, like carbon, oxygen, and nitrogen, make up our bodies and the air we breathe. Yet there is also a class of ...

The periodic table of elements—also known as Mendeleev’s table—was developed in 1869 by Russian chemist Dmitri Mendeleev. It organizes all known chemical elements by their atomic number ...