Based on your observations, relate the container from the simulation to a car airbag. What would happen to an inflatable airbag if air molecules were to be continuously added to it, similar to the container in the simulation?

Ithink is a because if say increased in electronegativity

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.