Although there exists a dipole moment in the molecule, I guess its nonpolar because the dipole is very small as the electronegativity difference between the Br and Cl is very low and so it can be neglected.
BrCl₅ is an asymmetrical molecule because it has one lone pair and five atoms bonded to the central atom. Due to low difference of electronegativities, BrCl₅ is a nonpolar molecule.
Explanation:
According to the Linus Pauling scale, the difference between their electronegativities Δx can be determined if the link will be:
polar: 0 ≤ Δx ≤ 0.4
nonpolar: 0.5 ≤ Δx ≤ 1.6
ionic: 1.7 ≤ Δx ≤ 2.0
Br-Cl bonds are nonpolar because the difference between their electronegativities is:
Francium is an element that melts at room temperature. Francium is a highly reactive element, and only contains one valence electron, which is very ironic in my opinion.
