Answer:
I have no idea it does show anything about it I checked just rely on the students to help you until they show up :)
Answer:
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.
Step-by-step explanation:
0.2% becouse
0.002=2/1000=0.2/100
<D is corresponding to <CGF
answer is <D last choice