Answer:
Step-by-step explanation
TIP:
group 1= 1 valence
group 2= 2valence
group 3- 12 vary depending on the charge
group 13= 3 valence
group 14= 4 valence
group 15= 5 valence
group 16= 6 valence
group 17= 7 valence
group 18= 8 valence (a full shell) they don't bond they're noble gases
This should tell u the valences :) it says the group on the top of your picture just look at the small text.
The dot structure:
1. write the symbol for example Zinc is Zn.
Zinc has 2 valence electrons (you can figure out the valence of transition metals by doing the electron config but that's painful and annoying so i'm just going to tell u it)
Imagine the symbol Zn has a border on it like a square. each side can ONLY have 2 dots MAXIMUM!! therefore its dot structure will look like:
:Zn (it doesn't matter what side you put them on, if it were 3 valence just add a lonely dot on an empty side and so on so forth)
Hope i helped