Question

Lewis Diagrams for Atoms of Representative Elements by Period What are "E", if each of the following atomic electron-dot diagrams corresponds to a sixth period, representative element? Representative elements are those that belong to the groups 1,2,and 13-18 (IA - VIIIA) of the Periodic Table. Also called Main Group elements, they are characterized by having their outermost or valence electrons in s and p subshells. Determine the element's identity in each case. Enter the chemical symbols for the elements, in the boxes provided. (Answers are Case-SeNSITIVe and must all be simultaneously correct.) E. Submit Answer Tries 0/5 e Post Discussion Send Feedback NOV

Answer 1

1) Top left
It has 4 valence electrons.
So, it belongs to group IVA
Element in group IVA and period 6 is Pb
Answer: Pb

2) Top Right
It has 1 valence electrons.
So, it belongs to group IA
Element in group IA and period 6 is Cs
Answer: Cs

3) Bottom left
It has 6 valence electrons.
So, it belongs to group VIA
Element in group VIA and period 6 is Po
Answer: Po

4) Bottom Right
It has 8 valence electrons.
So, it belongs to group VIIIA
Element in group VIIIA and period 6 is Rn
Answer: Rn