I am so very lost if someone can help me as soon as possible as well as explain the answers, that would be very helpful. (I tried answering a few but I’m pretty sure I got them all wrong)

Complete the table for ion charge based upon their losing or gaining electrons in the outer shell. (use the periodic table as necessary.) group most likely ionic charge # of valence electrons i +1 ii +2 iii +3 iv +4 or -4 v -3 vi -2 vii -1 viii 0

Iknow #2 is d. i just need to know why

How is the atomic number of a nucleus changed by alpha decay