Here's why:
* Francium (Fr) is an alkali metal in Group 1 of the periodic table. It readily loses one electron to form a +1 cation (Fr+).
* Hydrogen (H) is a nonmetal in Group 1. It gains one electron to form a -1 anion (H-).
When these elements react, the francium atom donates its outer electron to the hydrogen atom, resulting in an ionic bond. This forms a compound with the formula FrH.
However, it's important to note that francium is an extremely rare and radioactive element, making it difficult to study and synthesize its compounds. Therefore, francium hydride is a theoretical compound with limited practical applications.
