Consider the following elements20Ca, 80, 18Ar, 16S, 4Be, 2He Which of the above elements would you expect to be in group 16 of the Periodic Table?- 20Ca and 16S
- 20Ca and 8O
- 18Ar and 16S
- 8O and 16S
Correct Answer: (d) 8O and 16S
Explanation: 8O has the electronic configuration: 2,6 and 16S has the electronic configuration: 2,8,6. As the number of valence electrons is 6 in both cases, hence it belongs to group 16.
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