Packet 10: Bonus 7
Hyperfine transitions in this system result in the so-called 21 cm line in astronomy. For 10 points each,
[10e] Name this system, an atom consisting of one proton surrounded by one electron.
ANSWER: Hydrogen atom
[10m] This series of transitions within hydrogen’s energy levels in the visible portion of the spectrum usually occur when electrons drop to the n=2 energy level. This series is contrasted with the Lyman and Paschen series.
ANSWER: Balmer series
[10h] The angular functions that comprise part of hydrogen’s total wave function are referred to as “harmonics” described by this adjective.
ANSWER: spherical harmonics
<Science - Chemistry, Rohan Ganeshan> | VAULT II Packet 10
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 35 | 18.29 | 91% | 60% | 31% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Birmingham B | Bath | 10 | 0 | 0 | 10 | E |
| Cambridge | Southampton | 10 | 10 | 10 | 30 | EMH |
| Southperial | Oxford | 10 | 0 | 0 | 10 | E |
| Warperial | Birmingham A | 10 | 0 | 0 | 10 | E |
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| VAULT II at Georgia Tech | 2026-01-24 | ✓ | 6 | 20.00 | 83% | 83% | 33% |
| VAULT II at Eden Prairie HS | 2026-03-13 | ✓ | 2 | 20.00 | 100% | 100% | 0% |
| VAULT II at McGill | 2026-03-13 | ✓ | 4 | 17.50 | 100% | 75% | 0% |
| VAULT II at UCSB | 2026-03-13 | ✓ | 4 | 22.50 | 100% | 75% | 50% |
| VAULT II Northern UK | 2026-04-24 | ✓ | 3 | 6.67 | 33% | 33% | 0% |
| VAULT II Southern UK | 2026-04-24 | ✓ | 4 | 15.00 | 100% | 25% | 25% |
| VAULT II at Harvard | 2026-04-30 | ✓ | 4 | 15.00 | 100% | 25% | 25% |
| VAULT II at MINT | 2026-06-19 | ✓ | 1 | 10.00 | 100% | 0% | 0% |
| VAULT II Stanford Online | 2026-07-17 | ✓ | 7 | 24.29 | 100% | 71% | 71% |