Helium hydride ion

High school (ages 12+)
Space & Astronomy

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Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/helium-hydride-ion

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the chemical formula?HeH+
2. What is the laboratory synthesis year?1925
3. Why is the helium hydride ion called the strongest acid?It is the strongest known acid because it can give away its proton (H⁺) very easily. Its positive helium nucleus pulls the electron cloud toward itself, leaving the hydrogen proton free to leave.
4. How was the helium hydride ion made in the laboratory?Scientists first created it in 1925 using early quantum chemistry techniques. They had to keep the gas very cold and at low pressure so it wouldn't react right away.

Heteronuclear Ion: An ion composed of atoms from two or more different elements, such as HeH+.
Brønsted-Lowry Acid: A chemical species that donates a proton (H+) in a reaction.
Interstellar Medium (ISM): The diffuse matter and radiation that exist in the space between stars within a galaxy.
Quantum Chemistry: The application of quantum mechanics to chemical systems, explaining molecular structure and bonding.