That statement is incorrect. Barium is actually quite likely to form positively charged ions. Here's why:

* Electronic Configuration: Barium (Ba) has an electronic configuration of [Xe] 6s². It has two valence electrons in its outermost shell.

* Electropositivity: Barium is a highly electropositive element. This means it has a strong tendency to lose electrons to achieve a stable noble gas configuration.

* Ion Formation: To achieve a stable noble gas configuration like Xenon (Xe), Barium readily loses its two valence electrons, forming a +2 ion (Ba²⁺).

Therefore, Barium is highly likely to form positively charged ions, not unlikely.