New answers tagged electrons
1
Did he know the mass of a hydrogen atom at the time? Because J.J. Thomson already discovered that electron is a lot lighter than a hydrogen atom (about 1800 I believe).
The idea that the mass to charge ratio of cathode ray "particle" (modern day electron) is a lot lighter than hydrogen came about indirectly from electrochemical experiments and the ...
0
Yes, there are a large number of negatively charged metal ions, many of them containing several covalently bound atoms. The positively charged counterion is typically a group 1 metal.
Wikipedia defines a zintl phase as the product of a reactio between a post transition metal or metalloid, but most of the examples are based on elements that are not ...
0
To make a capacitor out of metal, you have to have negatively charged metal atoms on one of the plates (although I guess one could argue that the negative charge is not tied to a particular atom, but shared among all the atoms).
6
The electron affinity, defined as the energy released in the reaction
$$\ce{X(g) + e^- -> X^- (g)}$$
is positive for all but the noble elements and a few elements with half-filled shells (see a data table here), which is consistent with the anion being more stable than the neutral atom. This makes it difficult to understand the motivation for the first ...
10
Absolutely! You will find these mostly in electride systems and off these, mostly in alkali metals.
Here is an example research paper:
"Superakali-Alkalide Interactions and Ion Pairing in Low-Polarity Solvents, J. Am. Chem. Soc., 2021, 143(10), 3934–3943 (https://pubs.acs.org/doi/10.1021/jacs.1c00115)
Remember, metals have a positive charged when ...
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