Subscripts are usually used as a counter or an index. For example, Xn (where n is a subscript - this pathetic browser does not support subscripts) usually refers to the nth (it does not support superscripts either!) X in a sequence of Xs. Since they are counters they should belong to the set of counting numbers.
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Yes.
NH4NO2 all numbers in subscripts
NH4NO2 all numbers in subscripts
subscripts
Pb(C2H302)4 **** Numbers are subscripts
K2UO4 Note the numbers should be subscripts.
subscripts
subscripts
subscripts
subscripts
subscripts