Actinide chemistry

High school (ages 12+)
Science & Technology

Name:

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/actinide-chemistry

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 element range and atomic numbers?Actinium (89) through Lawrencium (103)
2. What is the dominant electron shell filling?The 5f electron shell
3. What are actinides and where are they found on the periodic table?Actinides are a group of 15 heavy metal elements, numbered 89 to 103, located at the bottom of the periodic table in the f‑block.
4. Why do actinides have different oxidation states?Their 5f, 6d, and 7s electrons can share energy, so the elements can change charge in many ways, like +3, +4, +5, or +6.

f-block Elements: Elements characterized by the filling of f-orbitals, exhibiting unique magnetic and optical properties.
Oxidation State: A measure of the degree of oxidation of an atom in a chemical compound, often representing its apparent charge.
Transuranic Elements: Elements with atomic numbers greater than 92 (uranium), typically synthesized in laboratories.
Nuclear Chemistry: A branch of chemistry concerned with the properties and behavior of atomic nuclei, including radioactivity and nuclear reactions.