What Element Has The Electron Configuration Kr 5s1 4d5?
What Element Has The Electron Configuration Kr 5s1 4d5? Explanation: And if Z=42 , the element is molybdenum , Mo . What element is 4d5? Technetium is a chemical element with symbol Tc and atomic number 43. It is the lightest element whose isotopes are all radioactive; none are stable, excluding the fully ionized state