What element has 11 protons 11 neutrons 11 electrons?

The neutral atom of sodium has 11 electrons.

Sodium has eleven electrons in each of its atoms, as long as the atoms are neutral. You can determine this by looking at the atomic numbers on the Periodic Table. The atomic number is the number of protons in the nucleus of an atom. In a neutral atom, the number of electrons is equal to the number of protons. So, given the eleven electrons, you would look for the element with the atomic number eleven, which is sodium (Na).