Actinoids

Pronunciation: /ˈæk.tɪˌnɔɪdz/

Definitions of actinoids

noun a group of chemical elements that are part of the actinide series on the periodic table

Example Sentences

A1 Actinoids are a group of chemical elements in the periodic table.

A2 Students learn about actinoids in their chemistry class.

B1 The actinoids have unique properties that set them apart from other elements.

B2 Scientists study the behavior of actinoids in various chemical reactions.

C1 Research on actinoids has led to advancements in nuclear energy technology.

C2 The complex nature of actinoids makes them a subject of intense scientific study.

Examples of actinoids in a Sentence

formal The actinoids are a series of chemical elements in the periodic table with atomic numbers ranging from 89 to 103.

informal Do you know about the actinoids, those elements with really high atomic numbers?

slang The actinoids are like the rockstars of the periodic table, with their high atomic numbers and unique properties.

figurative Just like how the actinoids stand out in the periodic table, sometimes we need to stand out in a crowd to make an impact.

Grammatical Forms of actinoids

• plural: actinoids
• comparative: more actinoid
• superlative: most actinoid
• present tense: actinoid
• future tense: will actinoid
• perfect tense: have actinoid
• continuous tense: is actinoiding
• singular: actinoid
• positive degree: actinoid
• infinitive: to actinoid
• gerund: actinoiding
• participle: actinoided

Origin and Evolution of actinoids

First Known Use: 1899 year

Language of Origin: Greek

Story behind the word: The word 'actinoids' is derived from the Greek word 'aktinos' meaning ray or beam.

Evolution of the word: Originally used in chemistry to refer to a group of radioactive elements with similar properties, the term 'actinoids' has evolved to also include the broader category of actinide elements in the periodic table.