Identify the amount of electrons typically lost or gained for each group: Group 1 b. Group 2 c. Group 13
Group 14 e. Group 15 f. Group 16
Group 17 h. Group 18

The problem here is that according to aufbau principle before 3d orbital 4s subshell comes.after filling 3p orbital with electrons you have 4 electrons left, you place two in 4s with opposite spin and the other two in 3d in any of its two orbitals of total five orbitals with the same spin.