The chemical with phosphorus 4 oxygen 10 is tetraphosphorus decaoxide, also known as phosphorus pentoxide.

Here's why:

* P₄O₁₀ is the chemical formula, indicating there are 4 phosphorus atoms and 10 oxygen atoms.

* Tetraphosphorus refers to the four phosphorus atoms.

* Decaoxide refers to the ten oxygen atoms.

This compound is a white, crystalline solid that is a powerful dehydrating agent. It is also used in the production of phosphoric acid.