Answer:
29:Mn,V,Sr
30:Ni,Pd,Cs
31:Cr, Mo, W
32:Sn,Pb,Ti
33:F, P, As
Sorry I was in a rush so it may not be right; so check with this picture to help you out.
The lever family and the inclined plane family.
Answer:
The answer would be C). All of the elements inside a period will always have the same amount of shells. Hope this helps!
<span>Conductor, and there you go, i hope this helped but if its wrong, i am extremly sorry</span>