Common elements should be ions by default #40
Description
Currently, we prefer to list uncharged entities rather than charged one. This preference should be reversed for elements that are almost always ions in a user's paper:
- H 1+
- Na 1+
- K 1+
- Mg 2+
- Ca 2+
- Fe 3+ then 2+
- Cu 2+
- Zn 2+
- O 2-
- S 2-
- P 3-
- Cl 1-