What element has 11 protons and 12 neutrons and 11 electrons?

The element with 11 protons is sodium, which is represented by the symbol Na on the Periodic Table. Since the number of protons determines the element, this element is sodium. The number of neutrons can be calculated by subtracting the atomic number (protons) from the Atomic Mass (protons + neutrons), so with 11 protons and 12 neutrons, the atomic mass is 23. Sodium typically has 11 electrons to balance the 11 protons, following the principle of charge neutrality in atoms.