Tagged: Modern periodic table

The inert gases 0

The properties of the noble ( inert ) gases

The inert gases are the elements in which the outermost electron shells are completely filled with the electrons , so they don’t participate in any chemical combination in the ordinary conditions .

The modern periodic table 0

The description of the modern periodic table

Modern periodic table The modern periodic table consists of 7 horizontal periods and 16 vertical groups ( 18 vertical columns ) . The elements of the modern periodic table are classified into 4 blocks...