Unfortunately, text replacement in Photoshop is a bit of an all-or-nothing proposition. When it comes to text, PS is a fairly blunt instrument, and lacks the sophistication of a layout program like InDesign. You can preset the basic text styling, but any fine tuning, such as italicizing individual words, is going to have to be done by hand.

I've not tested tabs, but I expect that you can insert an actual tab in a text field in a comma-delimited file and have that honored by Photoshop. There aren't any special codes that would make this work.

That said, what you are trying to do most likely can be accomplished by scripting. There are plenty of helpful folks who hang out on SO and on the Adobe Photoshop scripting forum. In my experience, scripters are terrifically willing to help out when asked.

Formating Text added via Data Sets in Photoshop
I am told that for these two molecules, one of them is not as resonance stabilized as the other. Apparently it's the chlorine one, and it's because of the mismatch in the size of chlorine and carbon. This makes sense prima facie, but can someone confirm this is true? I can see how carbon and nitrogen have similarly sized p orbitals and thus have good overlap, and how chlorine and carbon might have poor p orbital overlap, like a BB pellet with a basketball. 


