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description: a species of atoms having the same number of protons in the atomic nucleus

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Classification of the class chemical element (Q11344)  View with Reasonator View with SQID
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    listing of subclasses, number of super and subclasses, properties of the instances: ⟨chemical element⟩ on Miga


    Wikidata:Project_chat/Archive/2014/05#chemical_element_.28Q11344.29_instance_of+.28P31.29.2C_subclass_of+.28P279.29_and_part_of+.28P361.29 Tamawashi (talk) 05:00, 12 July 2014 (UTC)


    химический элемент - подмножество множества химические элементы (=периодическая система химических элементов Q10693) --Fractaler (talk) 07:57, 17 August 2016 (UTC)


    Merge? --Fractaler (talk) 13:52, 10 October 2016 (UTC)

    Delete. author  TomT0m / talk page 17:16, 10 October 2016 (UTC)
    Concur. Note also Q17327503. Tortoise0308 (talk) 14:18, 26 November 2016 (UTC)
    I see. For example, nitrogen (Q627): period 2 (Q207712) consists of Q17327503; group 15 (Q106675) consists of Q17327492 --Fractaler (talk) 15:50, 26 November 2016 (UTC)
    Useless, redundant. In the periodic table, "Group" is a classification. It is enough to claim: nitrogen (Q627) is classified as being in group 2 (and so is a 'member of' group 2). Aggregating, this already lists "members of group 2", and next up "members of a group".
    Listing 'Element of a specific group' is no new information. (Also note the 'specific'?!; are there members of non-specific groups?). 'Element of a specific group' is exactly the same as the aggregate 'Members of groups', which is automatically provided. -DePiep (talk) 11:52, 29 January 2017 (UTC)
    nitrogen (Q627) is homonym (Q160843) and = 1) Q17327492 and =2) Q17327503. The mathematica model is: nitrogen (Q627) = point (Q44946) on Cartesian coordinate system (Q62912) (2D). Q17327492 (or Q17327503) is point on line (Q37105) (1D). So nitrogen (Q627) = intersection (Q185837) (Q17327492 + Q17327503)

    A compound or a substance?[edit]

    If I understand the definition of a en:Chemical compound well, a chemical element does not qualify because there are no multiple elements involved. I think it should be chemical substance (Q79529). -DePiep (talk) 11:55, 29 January 2017 (UTC)

    Electron configuration[edit]

    How to create new property - "Electron configuration" based on electron configuration (Q53859) ? Васин Юрий (talk) 17:39, 22 August 2019 (UTC)

    You would need to make a property proposal - see Wikidata:Property proposal. I assume we'd want a string value, like 1s2-2s2-2p6-3s2 - is there a standard string format for this? ArthurPSmith (talk) 18:19, 22 August 2019 (UTC)

    physical object[edit]

    Should this be a subclass or an instance of a physical object? And if not why? Juliansteinb (talk) 21:18, 13 January 2020 (UTC)