A chemical with 11 protons and 10 electrons is a sodium ion (Na+). Here's why:

* Protons define the element: The number of protons in an atom's nucleus determines its atomic number and its identity as a specific element. Sodium (Na) has an atomic number of 11.

* Electrons and ions: Neutral atoms have an equal number of protons and electrons. A sodium ion (Na+) has lost one electron, giving it a positive charge.

Let me know if you have any other chemistry questions!