Pauli exclusion principle No two electrons in a single atom can have the same set of quantum numbers 8.1 Energy of screened E = (-13.6 eV) Z 8.3 n² electron (n, l, m,,m,). Moseley's law for AE = (10.2 eV)(Z-1)² 8.5 Filling order of Is, 2s, 2p, 3s, 3d, 4s, 3d, 8.2 K X rays atomic subshells 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d Adding angular Lmax=1+2 8.6 Capacity of 2(2/+1) 8.2 subshell nl momenta ₁,mn and 2.mp Hund's rules for ground state M₁ = m +mp First S=Ms L = ML.max then 8.6 S.max Lmin = || −b| 7. Give a possible first excited state electron configuration of (a) Mg; (b) Cu; (c) Ar; and (d) Si. 1

Pauli exclusion principle No two electrons in a single atom can have the same set of quantum numbers 8.1 Energy of screened E = (-13.6 eV) Z 8.3 n² electron (n, l, m,,m,). Moseley's law for AE = (10.2 eV)(Z-1)² 8.5 Filling order of Is, 2s, 2p, 3s, 3d, 4s, 3d, 8.2 K X rays atomic subshells 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d Adding angular Lmax=1+2 8.6 Capacity of 2(2/+1) 8.2 subshell nl momenta ₁,mn and 2.mp Hund's rules for ground state M₁ = m +mp First S=Ms L = ML.max then 8.6 S.max Lmin = || −b| 7. Give a possible first excited state electron configuration of (a) Mg; (b) Cu; (c) Ar; and (d) Si. 1