An analytic atomic independent particle model potential adjusted to experimental single‐particle energy levels is used to generate wave functions for the valence and excited states of Cl, Ar+1, K+2, Ca+3, Sc+4, these wave functions in conjunction with the Born approximation and theLS‐coupling scheme, we calculate optical oscillator strengths for excitations from the 1s22s22p63s23p5(2P3/2) ground state. Reasonable agreement is obtained with available experimental and theoretical data.