Home » In the ground state, an element has 13 electrons in its M-shell. The element is_____ Atomic Structure MCQs In the ground state, an element has 13 electrons in its M-shell. The element is_____ January 8, 2022 13 Views Q. In the ground state, an element has 13 electrons in its M-shell. The element is_____ A. Copper B. Chromium C. Nickel D. Iron Answer: Chromium