Question
Bombarding superheavy nuclei with a doubly magic isotope of this element led to the discovery of elements in flerovium’s “island of stability.” For 10 points each:
[10h] Name this lightest element capable of double beta decay. A practically stable isotope of this element is the heaviest with a proton-to-neutron ratio of one and is also doubly magic.
ANSWER: calcium [or Ca; accept calcium-48 or calcium-40]
[10m] Yuri Oganessian fused calcium-48 with target nuclei at this Russian town’s Joint Institute for Nuclear Research. Flerovium is named for Georgy Flyorov’s work on superheavy elements in this town, which names element 105.
ANSWER: Dubna, Russia [prompt on dubnium or Db]
[10e] Most transfermium elements are merely “stamp-collecting,” as the heaviest abundant enough for chemistry is the element named for this scientist who formulated mass–energy equivalence.
ANSWER: Albert Einstein [accept einsteinium; prompt on Es]
<Chemistry>
Summary
| 2024 ACF Nationals | 2024-04-21 | Y | 4 | 12.50 | 100% | 25% | 0% |
Data
| Illinois | Columbia A | 0 | 0 | 10 | 10 |
| Harvard | Johns Hopkins | 0 | 0 | 10 | 10 |
| North Carolina A | Indiana | 0 | 0 | 10 | 10 |
| Chicago A | Yale A | 0 | 10 | 10 | 20 |