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potassium: K calcium: Ca scandium: Sc zinc: Zn gallium: Ga krypton: Kr

CH123: Gen Chem I 10/17/03 Dr J Electron Config Names: _______________________ _____________________ _________________________ ____________________.

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potassium: K calcium: Ca scandium: Sc zinc: Zn gallium: Ga krypton: Kr

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  1. CH123: Gen Chem I 10/17/03Dr J Electron ConfigNames: _______________________ _____________________ _________________________ ____________________ The relative energies of atomic orbital are shown in the diagram to the left. Two electrons can be placed in each orbital (Hund’s Rule) and lower energy levels are filled first. If orbitals are of equal energy (degenerate), one electron goes into each orbital before they go in as pairs. A. write the electronic configurations (in shorthand form - 1s22s22p6….) • potassium: K • calcium: Ca • scandium: Sc • zinc: Zn • gallium: Ga • krypton: Kr B. Based on the orbital diagrams and energy levels shown, write the electronic configurations for Cu and Cr • Copper Cu • Chromium Cr Note the following for Pd 6 and the Lanthanides Barium: Ba (atomic number 56): [Xe]6s2 Lanthanum: La (atomic number 57): [Xe]6s25d1 Cerium: Ce (atomic number 58): [Xe]6s24f15d1 Lutetium: Lu (atomic number 71): [Xe]6s24f145d1 Hafnium: Hf (atomic number 72): [Xe]4f146s25d2

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