use vs mention (was: second attempt)

[Richard Wordingham via Unicode]

On Thu, 1 Nov 2018 07:46:40 +0000
Richard Wordingham via Unicode <unicode at unicode.org> wrote:

> On Wed, 31 Oct 2018 23:35:06 +0100
> Piotr Karocki via Unicode <unicode at unicode.org> wrote:
> 
> > These are only examples of changes in meaning with <sup> or <sub>,
> > not all of these examples can really exist - but, then, another
> > question: can we know what author means? And as carbon and iodine
> > cannot exist, then of course CI should be interpreted as carbon on
> > first oxidation?  
> 
> Are you sure about the non-existence?  Some pretty weird
> chemical species exist in interstellar space. 

It's not interstellar, but CI is the empirical formula for diiodoethyne
and its isomer iodoiodanuidylethyne, and the CI⁻ ion has Pubchem CID
59215341.

Richard.