26

There are quite alot of chemical structure and mechanism drawing tools out there, but I would prefer using the online sketcher provided by ChemDoodle, due to the fact that it's completely online-based, and is quite handy and easy to use. Did I mention that it's completely free? Open the editor tool by going to https://web.chemdoodle.com/demos/sketcher/. Here'...


25

I support this. (Vote here if you support this, too.) As a computational chemist I am clearly biased, but currently cannot find any good reason to not have code highlighting. I have seen enough other computational chemists here and questions dealing with cheminformatics approaches that I think for a growing subset of questions it will become beneficial. I ...


19

$\textrm{UP UP AND AWA}^{ \textrm{a} ^{\textrm{a}^{\textrm{a}^{\textrm{a}^{\textrm{a} ^{\textrm{a}^{\textrm{a}^{\textrm{a}^{\textrm{a} ^{\textrm{a}^{\textrm{a}^{\textrm{a}^{\textrm{a} ^{\textrm{a}^{\textrm{a}^{\textrm{a}^{\textrm{a} ^{\textrm{a}^{\textrm{a}^{\textrm{a}^{\textrm{a} ^{\textrm{a}^{\textrm{a}^{\textrm{a}^{\textrm{a} ^{\textrm{a}^{\textrm{a}^{...


16

How to make a table in LaTeX: \begin{array}{|c|c|c|c|}\hline Alcolic \space beverage & Carboydrate \space content(\%) & pH \\ \hline Beer & 3.0-5.0 & 4.1-4.5 \\ \hline Wine & 0.0-12.9 & 2.8-3.8 \\ \hline Sweet \space liquor & 30.0-31.0 & 3.3-3.9 \\ \hline Strong \space alcohol & 0.0-1.2 &...


15

I know it is annoying, but I don't believe it's something new. I personally either down-vote and comment, ignore completely, or edit. It doesn't happen more often than other things I am more annoyed with. (I am also pretty sure that this meta post is directed at the wrong people, it's more often the new users who shout.)


12

Align at point: Define for easier typsetting \newcommand{\d}[2]{#1.&\hspace{-1em}#2} and use in table 1.23 as \d{1}{23} $$\newcommand{\d}[2]{#1.&\hspace{-1em}#2} \begin{array}{lrl} \hline \text{Beverage} & \text{Nomnom}&\hspace{-1em}\text{-factor} \\ \hline \text{Beer} & 100.&\hspace{-1em}000 \\ \text{Wine} & 23.&...


12

I personally prefer plain text titles only. For me this is a much more elaborate way of asking. Taking your example: Why does the transverse magnetization in Fourier Transform NMR consist of Ix+iIy ($\hat{I}_{\!x}+\mathrm{i}\hat{I}_{\!y}$)? I have no idea what $\hat{I}$ is. Even after reading the whole question I have no idea what it stands for. Currently ...


12

For Angstroms, check out: What additional formatting features are available to MathJax (possibly via \require{})? $\require{mediawiki-texvc}$ The $\ce{C-O}$ bond length in carbon dioxide is $\pu{1.16 \AA}$. $\require{mediawiki-texvc}$ The $\ce{C-O}$ bond length in carbon dioxide is $\pu{1.16 \AA}$. As for the others, I haven't experimented, but I ...


11

This change was introduced with MathJax/mhchem v3. That's because it is the recommended way of writing. It is IUPAC's recommendation. Red Book section IR-4.3 shows examples, but is missing a clear text description. The Green Book states "The staggered arrangement is now recommended" and refers to the Red Book. It is ACS's recommendation. The ACS Style ...


10

Quoting liberally from Poll: mhchem syntax for electron configuration answer and comments: In order to get $\mathrm{[Kr]\mskip2mu4d^{10}\mskip2mu5s^1\mskip2mu5p^3\mskip2mu5d^4}$, I'd prefer to input $\ce{[Kr] 4d^10 5s^1 5p^3 5d^4}$. Seen in the wild (because you get acceptable results, that way). [Source code of revision.] Already used a few ...


10

This is a trick for homework question, show answer only with mouseover! (pass mouse over the gray box to see the answer) How can I do that?


10

So, after failing to reproduce the problem in another browser, I have discovered my own answer. I want to leave this here for other folks who encounter this issue. The problem is in how you tell your browser to render MathJax. If you right-click on some maths, you will see the MathJax settings menu. Under Math Settings > Math Renderer you can change ...


10

Since we're not a professional publishing house, and since there's no ultimate editorial authority enforcing conformity to style, I suspect the ultimate answers to your questions are indeed: Depends. On however any given author feels like formatting them. Thus, if a post has units formatted in a way that is unambiguous and sufficiently easy to read, those ...


10

Yes and no. Yes - if the differences are cosmetic. One example of this is \dfrac vs. \frac, the latter of which is better supported on mobile. The difference here is cosmetic, and only noticeable when the fraction is inline. Compare \dfrac $\dfrac{1}{x^2}$ with \frac $\frac{1}{x^2}$. \dfrac $$\dfrac{1}{x^2}$$ \frac $$\frac{1}{x^2}$$ No - if the ...


10

This is enabled, but not by default - lots of existing posts use code formatting for things that don't benefit from syntax highlighting, and I don't see any pervasive language tags that would be useful here... So you'll want to rely on language hint comments to specify which (if any) highlighting you want to apply.


10

I suggest let's look to journalism (no, not the tabloids - but the concept) First, editing another users post for typos and typesetting is... working as intended I would say. The issue is when we quote 3rd party sources - that are not likely to respond for clarity. It is common practice in the field of good journalism to try to preserve when citing a ...


10

Looking at the Chicago Manual of Style, there are a couple of sections on permissible changes to quotations. Section 10.7.4 says that in a passage quoted from a modern book, journal, or newspaper, obvious typographical errors may be silently corrected. Section 10.8 says that typographical style may be changed to agree with the style of the work in which the ...


8

$$\ce{DCB ->C[{h\nu}]\ ^1DCB^{\ast}}$$ $$\ce{^1DCB^{\ast} + BP -> DCB^{.-} +BP^{.+}}$$ \[ J(\phi) = \mathrm{A} \cos^2\phi + \mathrm{B} \cos\phi + \mathrm{C} \] \begin{eqnarray} f(x) & = & \underbrace{x^{2}+2x+1}\\ & & \quad(x+1)^ 2 \end{eqnarray} $$123.45\,\times 10^{-6}$$ Colours defined outside the \ce{...} environment ...


8

I don’t think highlighting is useful. Numerous branches of science have achieved faithful quotations alongside highlighting what the person quoting considers most important without the use of ‘marker pens’. In fact, for centuries colour printing was much more expensive and it continues to be slightly more expensive than black-and-white. Yet the branches of ...


8

This is temporary text to hold the space.


8

I vote against adding ChemDraw JS to the Help Center. First of all, adding a single editor creates a false impression of a de facto standard, which it is not. Users need to have freedom of choice and be aware of the alternatives. If anything, adding link to the Software answer would be the right choice. Second, by mentioning a product on the official help ...


7

I think there is no policy. I don't think we need one - there are werse spelling errors. While I myself favour an occasional u in some words, I will write sulfur, because it is recommended by the IUPAC. I am also not a native and have learned both spellings incomplete, so you might find posts of mine where I just mix things up. I don't think that is a big ...


7

This was a change that was recently introduced to mhchem. (‘recently’ meaning ‘in the latest version’.) The change was made because IUPAC explicitly says the charge should not be above the index of the preceeding element. Which makes sense if you think about it in most cases (the charge of $2-$ belongs to $\ce{CrO4}$, not just to the $\ce{O}$) — but it is ...


7

This question covers a lot of topics so this answer may be long. First things first, as long as the post is readable there is no reason for downvoting or deleting based on the type of formatting alone. Readable means: the text is generally legible (some handwritings can be terrible but if it can reasonably connected to an intended meaning, it is okay) ...


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