often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic number. Scientists use the periodic ...

Periodic tables sometimes look different from each other. They can have different labels on the groups or numbers ... group have similar physical and chemical properties and show trends. The table ...

But the logic of the periodic table also relies upon the number and organisation of electrons in an atom. Let’s take chlorine as an example. It is positioned in group 7 of the periodic table ...

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

2 Flerovium (Fl) is a superheavy element (SHE) with atomic number 114. Experimental studies ... added superheavy element (SHE) in the periodic table. It completes the seventh period and belongs to ...

arranged by their atomic number. One never knows when one will need the properties of Rutherfordium in a hurry. See if you can organize the first 25 elements of the periodic table in order in the ...

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 ...