Two PES are recorded for elements A (3 peaks: 2:2:1 intensity) and B (3 peaks: 2:2:3 intensity).
Element A and element B respectively are most likely:
- Acheck_circle
Boron and Nitrogen
- B
Beryllium and Boron
- C
Carbon and Oxygen
- D
Lithium and Carbon
Explanation
A 2:2:1 ratio = 1s^2 2s^2 2p^1 (boron); 2:2:3 = 1s^2 2s^2 2p^3 (nitrogen).