What do you already know about chemical bonds? Why do they occur? What do they create? Can you think of any examples of chemical bonds?

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

the awnser is group 12

i think it's letter a.