Időben biztosan Beiktathat francium oxide sikátor könnyen kezelhető rés
Francium - Wikipedia
Lithium, Sodium, Potassium, Rubidium, Caesium and Francium - ScienceDirect
Francium Oxide - YouTube
Physical and Chemical Properties of Group 1 Elements - A Plus Topper https://www.aplustopper.com/ph… | Physical and chemical properties, Chemical property, Physics
What is francium oxide? - Quora
Solved Given the chemical formulas Na_2O, MgO, and Al_2O_3, | Chegg.com