How to Find the Valence Electrons for Scandium (Sc)

To find the number of valence electrons for Scandium (Sc) we need to look at its electron configuration. This is necessary because Sc is a transition metal (d block element) and we need to take into account electrons found in its d orbitals. We can write this in condensed electron configuration for Scandium as: [Ar] 3d¹ 4s² How to write the Sc electron config:    • A step-by-step description of how to ...   This allows us to look at the number of electrons outside of the Noble Gas core. For Sc this means we have 3 valence electrons. Note that for transition metals, like Scandium , not all of the valence electrons have to be used to form chemical bonds with other elements. More on Valence Electrons for Transition Metals: https://en.wikipedia.org/wiki/Valence... Definition of Valence in Transition Metals: Miessler G.L. and Tarr, D.A., Inorganic Chemistry (2nd edn. Prentice-Hall 1999). p.48. Helpful videos: • Finding Valence Electrons for Transition Metals:    • How to Find the Number of Valence Ele...   • Finding Valence Electrons (element):    • Finding the Number of Valence Electro...   • Finding Valence Electrons (molecule):    • Finding the Number of Valence Electro...   • How to Draw Lewis Structures:    • How to Draw Lewis Structures: Five Ea...   Drawing/writing done in InkScape. Screen capture done with Camtasia Studio 4.0. Done on a Dell Dimension laptop computer with a Wacom digital tablet (Bamboo).