Gethin: Francium. That's not an element that ... and are placed in the first vertical column on the left of the periodic table. All the Group 1 elements are very reactive, and all react with ...

so it is expected that francium is slightly more electronegative. Electronegativity generally increases as you move from left to right across a period in the periodic table. It decreases as you move ...

Watch this video to find out more information on the periodic table ... Elements in a group have similar physical and chemical properties and show trends. The table below shows the melting points ...

It was recognized early on that the periodic table more ... In 2002, a group in the US succeeded in trapping 300,000 atoms of francium on which they performed several key experiments of this ...