Only the value for the covalent radius is known now: 260 pm.
The element with the biggest ionic size is francium due to its large atomic radius and low nuclear charge, leading to a highly polarizable electron cloud and therefore a larger ionic size.
The valence of francium is +1.
The molecule is neutral.
Francium is an alkali metal that will lend electrons in an ionic compound.
Francium and fluorine form an ionic bond. Francium, being a highly reactive metal, will lose its 1 valence electron to fluorine, a highly electronegative non-metal, which will gain the electron to achieve a full valence shell. This transfer of electrons results in the formation of an ionic bond between the two atoms.
The atomic size of francium is of course greater.
This compound is not known today.
Francium would likely form an ionic bond with bromine by transferring its single valence electron to bromine in order to achieve a stable electron configuration. This would result in the formation of francium bromide (FrBr).
Francium and fluoride can form an ionic compound called francium fluoride. Francium is a highly reactive alkali metal, while fluoride is a negatively charged ion. When combined, francium will donate its electron to fluoride, forming a stable compound with a 1:1 ratio of francium to fluoride ions.
Yes, the atomic size of francium is greater than that of cesium. Francium is located below cesium in the same group on the periodic table, so as you move down the group, atomic size generally increases.
The products of francium fluoride would be francium cations (Fr+) and fluoride anions (F-) due to the reaction between francium (Fr) and fluoride (F) ions. Francium is a highly reactive alkali metal and fluoride is a halide ion, so they would combine to form a stable ionic compound.
No, FrBr does not represent a covalent bond. FrBr is the chemical formula for the compound francium bromide, which is an ionic compound formed by the transfer of electrons between francium and bromine atoms.