Soft reactive metal, used in atomic clocks.
Rubidium is a alkali-metal element located in period 5, group 1 of the periodic table. It has the chemical symbol Rb and atomic number 37. The electron configuration of Rubidium is [Kr] 5s1, giving it 1 valence electron(s).
Explore Rubidium in interactive 3D with the Soren Periodic Table. View Bohr model, quantum orbital model, nucleus inspector, and phase lab with temperature and pressure controls. Includes fun facts, real-world uses, and NCTB curriculum integration for Bangladeshi students.