Final answer:
The element with 11 electrons is aluminum (Al).
Step-by-step explanation:
The element with 11 electrons is aluminum (Al). Aluminum has 13 protons and a mass number of 23. It is classified as an alkali metal. The aluminum atom loses three electrons, resulting in an overall positive charge and forming an ion known as the aluminum cation, Al³+.
Learn more about Aluminum (Al) and its electron configuration