The answer depends on what category you're looking for. Here's a breakdown:

* Elements: Uranium, Boron, and Hydrogen are all elements on the periodic table.

* Chemical Compounds: Uranium salts are compounds formed from uranium and other elements.

* Metals: Uranium is a metal, Boron is a metalloid (sometimes considered a non-metal), and Hydrogen is a non-metal.

Therefore, to give a definitive answer, please clarify what category you're asking about.

For example:

* If you're asking about elements: All three belong.

* If you're asking about metals: Only Uranium belongs.

* If you're asking about chemical compounds: Only Uranium salts belong.