Helium in Disguise - Periodic Table of Videos

TL;DR

A recent paper in Science discusses an experiment that involves the reaction between hydrogen and helium, showcasing surprising results.

Transcript

so there's a recent paper in science it was published about a month ago when I first saw it I didn't really understand what it was about but when I understood it which was reading a simpler explanation in another magazine and then coming back to it is really fascinating and I want to tell you about it it begins with a really rather boring reaction ... Read More

Key Insights

• 🫀 Different isotopes of hydrogen, such as deuterium and tritium, can provide valuable insights into atomic reactions.
• #️⃣ Helium cannot react with hydrogen due to the difference in the number of electrons.
• 👶 The experimenters used muons to create a new configuration involving helium and hydrogen, enabling the observation of a surprising reaction.

Questions & Answers

Q: How did the experimenters study the effect of different isotopes of hydrogen in the reaction?

The experimenters used heavier isotopes of hydrogen, such as deuterium (D) and tritium (T), to observe their impact on the reaction. These isotopes have different weights than regular hydrogen and provide insights into atomic reactions under varying conditions.

Q: Why can't helium normally react with hydrogen in a similar way?

Helium has two electrons, while hydrogen has only one. When helium atoms approach hydrogen, the two electrons cannot displace the single electron in hydrogen, preventing a reaction. This is due to the difference in the number of electrons between the two atoms.

Q: How did the experimenters disguise helium as hydrogen?

The experimenters used a particle called a muon, which is similar to an electron but much heavier. By accelerating muons and having them knock out one of the electrons in helium atoms, they created a new configuration with helium, muon, and hydrogen. This allowed them to observe the reaction between these atoms.

Q: What is the significance of the new molecule called hydrogen 4.1 mentioned in the paper?

Hydrogen 4.1 is a molecule that has never been produced before. Although it is only stable for a fraction of a second, it allows scientists to measure the reaction rate and test existing theories about atomic reactions.

Summary & Key Takeaways

• The paper explores the reaction between different isotopes of hydrogen and helium, specifically focusing on the impact of weight on the reaction.

• By disguising helium as hydrogen using muons, the authors were able to create a molecule with helium and hydrogen, revealing unexpected reaction possibilities.

• The experiment challenges existing theories of how atoms react and provides new insights into hydrogen-helium reactions.