Use an orbital diagram to describe the electron configuration of the valence shell of each of the following atoms. (Let n stand for the highest occupied principal quantum level, and m for the principal quantum level right below it. Complete each energy level from left to right. Enter. for an unoccupied orbital, _ for a singly occupied orbital, and for a doubly occupied orbital.) (a) Ti (b) Mo ?? v ns (c) Sc ?? v ?? v ?? v ?? v md2 md. XZ md yz md. xy ?? v ?? v ?? v nPx ?? v md x2 y2 nPz ?? v ns ?? ~ md2 ?? v md XZ ?? V md yz ?? v ?? mdxy mdx2 y2 ?? ~ ?? v nPx ?? ~ ns (d) Br ns yz md xy XZ mdy md2 mdx md2 md XZ md. yz nPx npz mdx2 y2 md xy md x2 y2 nPx