Talk:Melting points of the elements (data page)

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This page is intended as an authoritative data collection with citation of sources, that may be cited as a central reference by other articles (such as for the chemical elements). Femto 20:10, 18 Mar 2005 (UTC)

[edit] Guessed values

Elements like francium, astatine, fermium, mendelevium (and heavier) have never been obtained in a solid state and their melting points have never been measured. Can one believe the melting point of Fr is exactly 300 K and Md and No exactly 1100 K? It is better to cancel such "data", because a reader may think they are real, especially when he or she finds "agreement of sources". Sincerely, Witold, a casual visitor.87.207.174.157 23:45, 19 September 2006 (UTC)

Trailing zeros usually aren't treated as significant digits, and all measurable properties have an uncertainty associated with them, some more some less. Unfortunately the uncertainty is commonly omitted even by good sources. I don't think it's a problem when we give values according to reliable sources that weren't directly measured but derived with reasonable certainty. Including proper uncertainties would still be better though, if sources can be found. Femto 14:38, 20 September 2006 (UTC)

iwant to know , can i aded cacl2 in melted metall —Preceding unsigned comment added by 217.219.40.86 (talk) 12:38, 13 May 2008 (UTC)