Electron configuration for Sc denotes the arrangement of its 21 electrons within specific energy levels. Scandium, with an atomic number of 21, has an electron configuration of 1s²2s²2p⁶3s²3p⁶4s². This configuration indicates that the first two energy levels are filled with electrons, with two electrons each in the 1s and 2s orbitals and six electrons in each of the 2p, 3s, and 3p orbitals. The outermost energy level, 4s, contains the remaining two electrons. Understanding electron configurations helps determine an atom’s chemical properties and interactions with other atoms.
