actinium

Summary

actinium is a chemical element^[1]. actinium draws 1,365 Wikipedia views per month (chemical_element category, ranking #99 of 144).^[2]

Key Facts

• actinium is credited with the discovery of André-Louis Debierne^[3].
• actinium's instance of is recorded as chemical element^[4].
• actinium's instance of is recorded as radioactive element^[5].
• light beam is named after actinium^[6].
• actinium's canonical SMILES is recorded as [Ac]^[7].
• actinium's element symbol is recorded as Ac^[8].
• actinium's chemical formula is recorded as Ac^[9].
• actinium is part of group 3^[10].
• actinium is part of period 7^[11].
• actinium's Commons category is recorded as Actinium^[12].
• actinium's Unicode character is recorded as 錒^[13].
• actinium's time of discovery or invention is recorded as 1899^[14].
• actinium's topic's main category is recorded as Category:Actinium^[15].
• actinium's Commons gallery is recorded as Actinium^[16].
• actinium's atomic number is recorded as {'amount': '+89'}^[17].
• actinium's electronegativity is recorded as {'amount': '+1.1'}^[18].
• actinium's oxidation state is recorded as {'amount': '+3'}^[19].
• actinium's described by source is recorded as Great Soviet Encyclopedia (1926–1947)^[20].
• actinium's described by source is recorded as Brockhaus and Efron Encyclopedic Dictionary^[21].
• actinium's described by source is recorded as Small Brockhaus and Efron Encyclopedic Dictionary^[22].
• actinium's described by source is recorded as Granat Encyclopedic Dictionary^[23].
• actinium's described by source is recorded as Armenian Soviet Encyclopedia, vol. 1^[24].
• actinium's has characteristic is recorded as radioactivity^[25].
• actinium's mass is recorded as {'unit': 'Q483261', 'amount': '+227.028'}^[26].
• actinium's ionization energy is recorded as {'unit': 'Q752197', 'amount': '+499'}^[27].

Body

Definition and Type

Recorded instance of include chemical element^[4] and radioactive element^[5].

Origins

light beam is named after actinium^[6].

Use and Application

Part of include group 3^[10], a group^[28] and period 7^[11], a period^[29].

Influence

Things named for actinium include actinide^[30], a chemical series^[31] and protactinium^[32], a chemical element^[33].

Why It Matters

actinium draws 1,365 Wikipedia views per month (chemical_element category, ranking #99 of 144).^[2] actinium has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.^[34] actinium is known by 19 alternative names across languages and contexts.^[35]

Entities named for actinium include actinide^[30], a chemical series^[31] and protactinium^[32], a chemical element^[33].