Radium react with halogens (F, Cl, Br, I), oxygen, nitrogen, water, etc.
Radium is a chemical element; a compound has a minimum of two chemical elements.
Radium is a chemical element, not a compound.
The formula of radium perchlorate is Ra(ClO4)2, but this compound is not still prepared.
The chemical formula of radium carbonate is RaCO3.
As radium is radioactive, radium chloride would also be radioactive. Any compounds make with any radioactive material are radioactive, and they cannot be "not" radioactive. Radioactive material doesn't really care if it is "alone" or in compound; it will be radioactive in any case.
Radium is a chemical element; a compound has a minimum of two chemical elements.
Radium is a chemical element, not a compound.
The compound RaO is called radium oxide. It is a chemical compound composed of radium and oxygen atoms. Radium oxide is a highly reactive and radioactive compound.
The formula of radium perchlorate is Ra(ClO4)2, but this compound is not still prepared.
The chemical formula of radium sulphate will be RaSO4, but this compound is not still prepared.
The chemical formula of radium carbonate is RaCO3.
As radium is radioactive, radium chloride would also be radioactive. Any compounds make with any radioactive material are radioactive, and they cannot be "not" radioactive. Radioactive material doesn't really care if it is "alone" or in compound; it will be radioactive in any case.
Radium and zinc do not have a strong attraction for each other, so they do not readily combine to form a compound. It is unlikely for these two elements to form a stable chemical bond due to differences in their chemical properties.
The chemical formula for radium oxide is RaO. Radium is a group 2 element, so it typically forms a +2 oxidation state. This compound is an ionic compound where radium is in the cation form and oxygen is in the anion form.
Combining sulfur and radium would likely result in the formation of radium sulfide. Radium sulfide is a radioactive compound that emits harmful radiation. Handling and storing this compound would require specialized precautions due to its radioactivity.
RaF2 is the formula but if you're looking for the compound name it is Radium fluoride.
Each chemical element, each chemical compound is unique and interesting. See the link.