https://bugs.kde.org/show_bug.cgi?id=192551 Summary: erroneous molecular weight of some elements
Product: kalzium
Version: unspecified
Platform: unspecified
OS/Version: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: general
AssignedTo:
kalzium@...
ReportedBy:
fr.meral@...
Version: 2.2.1 (using 4.2.2 (KDE 4.2.2), Mandriva Linux release
2009.1 (Cooker) for i586)
Compiler: gcc
OS: Linux (i686) release 2.6.29.1-desktop-4mnb
Some elements have a wrong molecular weight according to the last official
release of IUPAC Atomic Weight dated Aug 2007
(
http://www.chem.qmul.ac.uk/iupac/AtWt/) which gives the reference values :
Element : M in kalzium ; M in IUPAC (in u)
As : 74.9216 ; 74.92160
Bi : 208.9804 ; 208.98040
Dy : 162.5 ; 162.500
Mg : 24.305 ; 24.3050
Rh : 102.9055 ; 102.90550
Sb : 121.76 ; 121.760
Sn : 118.71 ; 118.710
Te : 127.6 ; 127.60
--------------------------
Lu : 174.967 ; 174.9668
Mo : 95.94 ; 95.96
Yb : 173.04 ; 173.054
Zn : 65.409 ; 65.38
--------------------------
Bh : 264 ; 272
Db : 262 ; 268
Hs : 277 ; 270
Mt : 268 ; 276
Rf : 261 ; 267
Rg : 272 ; 280
Sg : 266 ; 271
Uuh : 292 ; 293
Note : for the elements As, Bi, Dy, Mg, Rh, Sb, Sn, Te, there is in fact a lack
of precision (the ending zeroes are missing). To prevent this, one solution
should be to enter in kalzium data, the molecular weight as text for the table
and convert theses values in numbers for the calculations (for example in the
calculate tool which gives the molecular weight of a molecular compound)
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