Talk:Molybdenum

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Good article Molybdenum has been listed as one of the Natural sciences good articles under the good article criteria. If you can improve it further, please do so. If it no longer meets these criteria, you can reassess it.
October 7, 2009 Good article nominee Listed
Version 0.5 (Rated GA-class)
WikiProject icon This article has been selected for Version 0.5 and subsequent release versions of Wikipedia.
 GA  This article has been rated as GA-Class on the quality scale.
 ???  This article has not yet received a rating on the importance scale.
 
Note icon
This article is within of subsequent release version of Natural sciences.
WikiProject Elements (Rated GA-class, High-importance)
WikiProject icon This article is supported by WikiProject Elements, which gives a central approach to the chemical elements and their isotopes on Wikipedia. Please participate by editing this article, or visit the project page for more details.
 GA  This article has been rated as GA-Class on the quality scale.
 High  This article has been rated as High-importance on the importance scale.
 

Elementbox converted[edit]

Elementbox converted 11:40, 6 July 2005 by Femto (previous revision was that of 17:53, 5 July 2005). 5 July 2005

Toxicity[edit]

Opening paragraph: "although excess molybdenum can be toxic in some animals". This phrase seems a bit redundant (although appearing in many other articles also) given that too much of any substance is toxic. Maybe a bit pedantic to make the point but if this is a Scientific based article then i'm sure accuracy should be aspired too. N.B The last sentence is not a call for any grammatical errors on my part to be brought to attention. —Preceding unsigned comment added by 213.161.91.194 (talk) 16:08, 11 January 2008 (UTC)

The MSDS cited by the article (rembar.com) claims Mo is nontoxic, but the ORNL reference and an MSDS from CERAC (another Mo supplier) both show it's toxic, especially in powdered form. If someone has data to refute these, please Be Bold :-), and also please add an explanation here for the rest of us. The ORNL page can be misleading if you only pick out occasional sentences. Mwistey (talk) 07:35, 20 October 2008 (UTC)

The quoted phrase is actually tautological. Presumably "excess" means "more than is good for you". g4oep — Preceding unsigned comment added by 77.96.60.31 (talk) 21:00, 24 October 2014 (UTC)

soft or hard??[edit]

Molybdenum is HARD it is machinable but is comparable to machining hardened 1040 steel — Preceding unsigned comment added by 205.168.12.146 (talk) 18:47, 24 February 2015 (UTC)

um the world book encyclopedia describes molybdenum as being "hard" rather than "soft". I have found some contradiction of whether it is soft or hard in numerous websites. could someone please confirm? —The preceding unsigned comment was added by 203.191.186.7 (talk) 06:27, 13 March 2007 (UTC).

Abundance in oceans[edit]

I linked the statement about abundance in the Earth's crust to the corresponding article and went to do the same for the oceanic abundance, but there appears to be a discrepancy. In this article we have it as the 25th most abundant in the oceans, whilst Abundances of the elements (data page)#Sea water (I presume "sea water" and "oceans" are synonymous?) has it as 42nd most abundant. Am I wrong in my assumption that these are measuring the same thing or is one of the articles in error? danno_uk 17:44, 18 March 2014 (UTC)

Production map[edit]

I've removed the map File:2005molybdenum (mined).PNG as the data is rather outdated and the distribution/location of the dots was confusing. Vsmith (talk) 14:12, 13 April 2014 (UTC)


Big Bertha[edit]

The current article states that "The Germans also used molybdenum-doped steel for heavy artillery, like in the super-heavy howitzer Big Bertha,[33]", but, according to the reference [1] in the french article on this point [2], it seems that it was only a wrong tip during the war, and Bertha had actually no steel with molybdenum.

Unfornutaly, I was not able to locate other reference, to confirm or not. — Preceding unsigned comment added by 93.26.92.246 (talk) 09:18, 19 April 2017 (UTC)

  1. ^ https://books.google.fr/books?hl=fr&id=IC8gAQAAMAAJ&focus=searchwithinvolume&q=grosse+bertha
  2. ^ https://fr.wikipedia.org/wiki/Molybd%C3%A8ne#Histoire