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GA Review

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Reviewer: Mike Christie (talk · contribs) 14:00, 21 September 2014 (UTC)[reply]


I'll review this; I'll add comments below as I go through the article.

  • "the synthesis of superheavy atoms, including ununoctium": should be "including livermorium", presumably?
  • "the synthesized flerovium isotope was actually 289Lv": should be "289Fl".
  • "between April–May 2001": between doesn't work with a dash like that; maybe "between April and May 2001" or "during".
  • I had to read the first paragraph of "Road to confirmation" several times. I began trying to rewrite it but I couldn't be certain of a couple of points. Does "This flerovium isotope has not been observed again in a repeat of the same reaction" mean that that particular decay chain hasn't been observed, or that no decay chain thought to indicate that isotope has been observed? And "later it was found that 289Fl did not have these decay properties": does that mean that that decay chain was found not to occur for 289Fl when that isotope was successfully detected? "However, its detection in this series of experiments": "it" means the decay chain, not the isotope, correct? And "in which the first alpha particle was not detected": what does "first" refer to? Is there any reason not to give the whole decay chain in this article?
  • Does the next paragraph mean that the Joint Working Party acknowledged copernicium-283 but not livermorium-291, from which it was derived? Or were there other pathways for the creation of copernicium-283, so that the livermorium pathway was not critical to the recognition? Later in the paragraph you say that the data from the earlier experiments was found inconclusive -- was this for the same pathway that created copernicium-283?
  • "Using Mendeleev's nomenclature for unnamed and undiscovered elements, livermorium is sometimes called eka-polonium": why italics for eka-polonium?
  • You have "Joint Working Group" and "Joint Working Party"; are these different?
  • "Livermorium is expected to be in the middle of an island of stability centered around copernicium (element 112) and flerovium (element 114): the reasons for the presence of this island are however still not well understood." A couple of things here. Surely if the island is centred around 112 and 114, 116 won't be in the middle? If I'm reading the graphic right, the 116 line doesn't intersect the white circle at all. And why "however"? I also think a colon is the wrong punctuation; I'd suggest splitting this into two sentences.
  • What's the meaning of the blue arrow, red and white circle, and the note "No way!" on the diagram?
    • This graphic was hastily taken from a .ppt presentation by an expert in the field as a replacement for a horribly inaccurate one that we used to use. Unfortunately I couldn't remove the arrows, circles, and notes. The white circle is the island of stability. The rest aren't relevant to this article (would be better on unbinilium), but for what it's worth: the blue arrow points to where the next superheavy element isotopes expected to be synthesized would be on the chart. The red circle is just a stylized prohibitory traffic sign, to indicate that this path is blocked because the half-lives beyond E120 get too low to allow detection using current technology. The note says the same thing. Double sharp (talk) 07:11, 22 September 2014 (UTC)[reply]
    • Thanks for removing those unnecessary markings! I've now replaced the image with your improved version. Double sharp (talk) 14:53, 24 September 2014 (UTC)[reply]
  • The paragraph that discusses cold and hot fusion needs some reorganization. Currently it uses the terms, then defines them, and in fact the definition of cold fusion is given before it's clear that that's what's being defined. In addition the discussion of neutron-rich nuclei makes it appear that actinides are not used in cold fusion; if that's the case, then I don't think there is a definition of cold fusion -- I assumed it was simpler lower energy versions of hot fusion, but perhaps not.
  • "can be accomplished": should we say "can" if this is only theoretical?
  • Suggest linking "magic" to "magic number (physics)".
  • "These effects cause livermorium's chemistry to be somewhat different from that of its lighter congeners": this is almost identical to a phrase used earlier in the same paragraph. I'd cut the earlier one and start the discussion of causes of differences in chemistry with a simpler phrase, such as "Some differences are caused by" or something along those lines. Then the final sentence can stay untouched.
  • There seems to be a fair amount of overlap between the last part of the first paragraph in the "Physical and atomic" section, and the first part of the next paragraph -- discussion of inert pairs, and the notation 7s2
    7p2
    1/2
    7p2
    3/2
    for example.
  • "expected to be volatile enough as pure elements for them to be chemically investigated": what is meant by volatile here? Reactive?

-- That's everything I can see on a first pass. I'll place this on hold. Mike Christie (talk - contribs - library) 21:59, 21 September 2014 (UTC)[reply]

Out of time for tonight; I should be able to return to this tomorrow. Mike Christie (talk - contribs - library) 01:38, 23 September 2014 (UTC)[reply]

I don't have time to continue this review tonight, but I did manage to clean up the image: see File:Island_of_Stablity_derived_from_Sagrebaev.png. Let me know if the area previously obscured by the graphics needs more grey squares. Is this usable in the article? Mike Christie (talk - contribs - library) 01:37, 24 September 2014 (UTC)[reply]

I think this looks great! Replaced image. Double sharp (talk) 14:50, 24 September 2014 (UTC)[reply]
OK -- I've asked for it to be moved on Commons as I made a mistake in the file name. Struck a couple more items above; just one or two points left now. I will see what sources I have access to later today and do a couple of spot checks if I can. Sorry about the delay getting back to this. Mike Christie (talk - contribs - library) 18:11, 27 September 2014 (UTC)[reply]
I looked at a few sources and couldn't find anything that I have access to, so I'll take it on faith. I'm passing this for GA; congratulations. Mike Christie (talk - contribs - library) 21:30, 28 September 2014 (UTC)[reply]
Sorry, just realized I never tested for dead links. Run the link detector at the top of this page and you'll see some dead/inactive links; can you fix those? Once that's done I'll pass this. Mike Christie (talk - contribs - library) 21:31, 28 September 2014 (UTC)[reply]
Hmm. That tool lists several, but some of the links it lists seem to be working all right. I've fixed the ones that don't. Double sharp (talk) 13:06, 29 September 2014 (UTC)[reply]
Looks good now. Passing. Mike Christie (talk - contribs - library) 09:18, 1 October 2014 (UTC)[reply]