The electronic configurations of four elements, P, Q, R and S, are listed. P: $2$ Q: $2,2$ R: $2,6$ S: $2,8$ Which of these elements are unreactive monatomic gases?
- AP and Q
- BP and S
- CQ and R
- DS only
Chemistry 0620 · IGCSE · Noble gases
Chemistry 0620 · IGCSE · Noble gases
The electronic configurations of four elements, P, Q, R and S, are listed. P: $2$ Q: $2,2$ R: $2,6$ S: $2,8$ Which of these elements are unreactive monatomic gases?