Line strengths of magnetic dipole and electric quadrupole transitions in the configurations 2p2, 2p4, 3p2 and 3p4 are calculated using interpolated values of spin-orbit interaction parameters and unperturbed energies of the levels. Probabilities of the important ground state transitions are tabulated in the four isoelectronic sequences through the following net charges: 17(2p2), 13(2p4), 15(3p2), 13(3p4).Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/31969/1/0000011.pd