There are two templates in Equation Editor that place both a
subscript and a superscript on a base. One of the templates
places the scripts after the base, and the other places the
scripts before the base. The template you need for ions is on the
"Subscript and superscript templates" palette, which is the third
one from the left on the second row. Once you click the palette
icon, the palette drops down to reveal 15 different templates.
The one you need is the third one from the left on the second
row. Click this template, fill in the slots (pressing the Tab key
to move from one slot to the other, and again after you finish
the second one), then fill in the base (PO, in your example).
One more note -- Equation Editor's default setting is to render
variables in an italic font. This isn't what you want for
Chemistry, of course, but you can change that behavior in the
Style menu by clicking Define. Uncheck "Italic" next to
"Variable".
MathType (the professional version of Equation Editor) gives you
more capability in several ways, but there are two particular
features that may be of particular use to you. One, you can save
common equations, formulas, ions, reactions, etc. to the toolbar
so you don't have to construct them each time. Two, when
constructing reactions, Equation Editor gives you six arrow
templates for that purpose, but MathType lets you choose from 27.
Some of the arrows notably missing from Equation Editor are
arrows with text slots both above & below the arrow (for initial
conditions, catalysts, etc.), and arrows representing equilibrium
reactions. There is a free 30-day trial of MathType available at
the link in my signature.
Bob Mathews (e-mail address removed)
Director of Training 830-990-9699
http://www.dessci.com/free.asp?free=news
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