[webqc.org]

Hello! 
Please evaluate my chemical web portal http://www.webqc.org and tell what you think about it.
Thank you in advance!

[Mitch]

It can't be that good if it doesn't link to Chemical Forums.

Elements 110 and 111 have names.

[mike]

It would be good to include data like:

Ionic radius
Electron configuration
Ionization energies
Stable isotopes

It is quite good though

[Alberto_Kravina]

Half-life of the most stable or most important radioisotope could be added...
It's pretty good, though.

[webqc.org]

Thanks!
I've just added almost everything as requested

[Mitch]

I'll approve the link request after you link to us.

[webqc.org]

I've just linked in section "LINKS".

Check out my new section "ONLINE TOOLS"!
It has "Molar mass calculator" and "Equation balancer".

[Mitch]

The masses for Dubnium to Bohrium are 100% wrong.

[Will]

The masses for Dubnium to Bohrium are 100% wrong.

The masses for Bohrium and Seaborgium are only a bit wrong.

[webqc.org]

The masses for Dubnium to Bohrium are 100% wrong.

Thanks!
I guess this will depend on what isotop you will take, and how precise was the mesurement.
I have corrected them to the latest data.

[Will]

That was quick!

[Mitch]

You should only use the isotope with the longest half life for those masses. The longest living isotopes are Db262, Sg266, Bh267, Hs269, Mt268, Ds271, Rg272.

To figure out the corresponding atomic mass, I sugest you use the predicted atomic mass evaluation's from Audi, Wapstra, Thibault (2003). Or better yet, you can just type in the A and Z in this script I made and it'll tell you the correct amu. http://www.chemicalforums.com/index.php?page=scripts#Atomic%20Mass%20Units:%20Audi,%20Wapstra,%20Thibault%20(2003)

[Will]

The longest living isotopes don't seem to be the atomic mass quoted (on wikipedia anyway):
{Element [Atomic mass]}
Dubnium [262] - Longest living isotope Db-268
Seaborgium [266] -  Longest living isotope Sg-271
Bohrium [264] - Longest living isotope Bh-262
Hassium [269] - Longest living isotope Hs-269 (same) (my periodic table says: Hs [277])
Meitnerium [268] - Longest living isotope Mt-276
Darmstadtium [281] - Longest living isotope Ds-281 (same)
Roentgenium [272] - Longest living isotope Rg-280

As much as I trust wikipedia it could be wrong.

[Mitch]

I never trust wikipedia, the ones above I quoted are most accurate and actually independently confirmed by more than one laboratory.

[Will]

This is a silly discussion.

Dr. Seaborg was given a leave of absence from the University of California from 1942-1946, during which period he headed the plutonium work of the Manhattan Project at the University of Chicago Metallurgical Laboratory.

http://nobelprize.org/chemistry/laureates/1951/seaborg-bio.html

On April 19, 1942, Seaborg reached Chicago, and joined up with the chemistry group at the Metallurgical Laboratory at the University of Chicago, where Fermi and his group had already learned how to convert U238 to plutonium using a chain-reacting pile. Seaborg's role was to figure out how to extract the tiny bit of plutonium from the mass of uranium.

http://en.wikipedia.org/wiki/Glenn_Seaborg

This is all well documented there is no mystery except from dillusional conspiracy theorists.

I never trust wikipedia

Except when it comes to getting information on Glenn Seaborg!