Talk:Caesium

Kelvin melting points are different

In the infobox, caesium has a melting point of 301.7 K, however in the text itself, it has a melting point of 301.6 K. I assume this is because the temperature template in the text doesn't round things up and just removes decimal places after tenths HAt 05:56, 6 September 2024 (UTC)

Googling it suggests it's 28.44 °C which translates to 301.59 Kelvin. Tayste (edits) 07:38, 6 September 2024 (UTC)

CRC 92nd edition gives 28.5°C, while Lange's handbook 15th edition gives 28.44°C. Double sharp (talk) 10:38, 6 September 2024 (UTC)

Please add either of those references to the article/infobox. Johnjbarton (talk) 15:19, 6 September 2024 (UTC)

At the bottom of the infobox there's a link to "references", leading to compilations like Melting points of the elements (data page). Both these sources are cited there. (I don't remember why it was set up this way, but probably it has something to do with how the references would be to the same handbooks on every element article.) Double sharp (talk) 15:36, 6 September 2024 (UTC)

Many of the lines on the infobox have inline refs. I think from the original post here we can say that the link at the bottom is ineffectual. Plus having both sources but different numbers is not verifiable. Johnjbarton (talk) 16:45, 6 September 2024 (UTC)

Electronegativity is not sourced.

These two claims are not sourced:

• It is the least electronegative element, with a value of 0.79 on the Pauling scale.
• Notably, caesium and fluorine have the lowest and highest electronegativities, respectively, among all the known elements.

Johnjbarton (talk) 17:49, 23 September 2024 (UTC)

Electronegativities of the elements (data page) has the electronegativities with multiple sources. DMacks (talk) 18:00, 23 September 2024 (UTC)

I tried that, but that page does not source the 0.79 value AFAICT. Johnjbarton (talk) 18:04, 23 September 2024 (UTC)

The Pauling table says it is this same value in all three of the reference-sets: "WEL", "CRC", "LNG" (see the §References section for the bibliographic details of each ref-set). DMacks (talk) 18:33, 23 September 2024 (UTC)

Ok, thanks. I did not realize that table was the data or what those TLAs meant. Johnjbarton (talk) 21:47, 23 September 2024 (UTC)

I didn't realize what the TLA columns were either...my only initial clue is that I know what "CRC" means in science:) I like this edit of yours to clarify. DMacks (talk) 05:51, 24 September 2024 (UTC)

How long will the supply last?

Well, with a production capacity of 12000 barrels of caesium formate solution per year the production of caesium counted as element is much higher than 4-5 tonnes per year.~2026-60943-0 (talk) 03:55, 17 February 2026 (UTC)

Swedish production

Erland Grip, former geologist at the Boliden company, has told me that Boliden had a small production of caesium compounds from pollucite from the Varuträsk pegmatite in their laboratories. At that time, probably the 1930s, the price was higher than gold, but the market saturated very quickly, I believe after a few kilograms.~2026-60943-0 (talk) 04:03, 17 February 2026 (UTC)