Mrs Roberts: Well, the modern periodic table shows us all of the elements arranged in rows, which are called periods. It has changed a lot over the years as we've learned more and more about atoms.

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 ...

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 records show that Mendeleev discovered the periodic system on 17 February 1869. In fact, he was ill at the time so his colleague Nikolai Menschutkin made the announcement on his behalf – on 6 ...

These elements are so massive that they do not fit in any of the seven rows that make up the periodic table. If they are ...

Highly accurate solutions are achievable for relatively small systems containing elements from the first two rows of the periodic table, enabling us to predict the energies and properties, sometimes ...

And just like the regular Periodic Table, there are even two corresponding rows at the bottom that are separated from the main table. But instead of Lanthanides and Actinides, mayra.artes features ...