Polonium is a radioactive element with the atomic number 84. It belongs to the group of elements known as metalloids, which have properties that are intermediate between metals and non-metals. The chemical symbol for polonium is Po.

The charge of polonium depends on the number of electrons it has gained or lost compared to its neutral state. In its neutral state, polonium has 84 electrons. When it loses two electrons, it becomes a positively charged ion with a charge of +2. This is the most common charge for polonium ions.

Polonium can also gain electrons, becoming a negatively charged ion. However, this is much less common.