Where To Find The Electron Configuration For Francium

Francium is a chemical element that has a chemical symbol Fr. The atomic number of Francium is 87. It was earlier known as Eka-caesium. Francium is extremely radioactive. It is the most stable isotope, francium-223 ( it was originally called actinium K but after the natural decay chain it appears in) has a very short life of only 22 minutes. Francium is the second-least electronegative element, after only caesium. After astatine, […]