I'm new to LyX, and try to typeset chemical formulae using package mhchem. It
is not quite clear from "LyX's detailed Math manual" of July 5, 2016 how to use
mhchem, though.
Preliminaries:
* I use Windows 10 + LyX 2.2.1
* I *assume* that package mhchem is installed when I specify to "Load
always" "mhchem" under Math Options of the Document Settings. [The
documentation recommends that "the LaTeX-package mhchem is installed" - but
assumes that the user knows how to install the package.]
* From the log when I typeset the document, it appears as if package
mhchem, version 4.04 is used.
Problem:
* I have assumed that the command "\ce" is to be used in math mode,
i.e., first use Ctrl+m to switch to math mode, then type "\ce " (including the
space after "\ce") to get the "new blue box" that is mentioned in section 20,
p. 57 of document "LyX's detailed Math manual".
* Assume that I want to typeset the chemical symbol for water, H2O -
but with the number ("2") in subscript.
* So I type Ctrl+m, and then "\ce ", and then "H2O"... but it does not
preview as H_2O. Shouldn't it? Is it only in the output/PDF file that I see it
correctly typeset?
* According to Martin Hensel's documentation for mhchem, version 4.05,
I can also typeset chemical expressions in text mode. I assume that I have to
insert the "\ce{xxx}" expression into a TeX code to achieve this?
Thanks!
-Bernt L.
