ScienceAugust 18, 2026

actinide

AK-tih-nide

Definition

Any of a series of 15 radioactive metallic elements in the periodic table with atomic numbers 89 through 103.

Etymology

Derived from the element actinium, the first member of the series, by adding the suffix -ide, which typically denotes a chemical compound or a specific group in chemical nomenclature.

In the news

The researchers plan to use different actinide elements in future experiments to expand the variety of novel, multiply-bonded chemical systems.

Uranium complex smashes record for consecutive bonds between atoms

Read the full article ↗

Chemistry World

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