Compare the three types of bonds based on what happens to the valence electrons of the atoms

I do not know if this is the correct answer,

Ionic Bonds - Whichever two atoms give one electron to the other 

Covalent Bond - Is whenever two atoms share electrons and they go back and forth between the two

I do not know what the third type is you would have to comment and let me know and I will try to find it for you! :)

Olá. porque a reação na temperatura é muito rapida a do copo : )

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.