One is a subscript number representing the number of atoms.
Solution:
The method of inputting or setting "font/subscript" with formula is more orthodox, but it greatly reduces the input speed.
For example, at the input of oxygen (a 2 in the lower right corner of O).
Suggestion:
After entering O, press ctrl+=, enter 2, and then press ctrl+= to resume normal input.
The second is to annotate the reaction conditions.
This can be done using the bottom and top row templates in microsoft Formula 3.0 or Formula Editor. It is best to set the format to "float above the text" after completion, which is convenient for adjusting the position.
Of course, underlining is ok, but it is too much trouble to adjust it to a satisfactory level.
The third is the symbol for gas rising or solid precipitation.
Right-click the soft keyboard on the input method indicator, click the "Special Symbol" soft keyboard in the open list, and click the J key or the K key to input symbols.
Differences and switching between comma and period on Chinese and English input method indicators;
The Chinese punctuation mark is-". ,"
The symbol of English punctuation marks is-". ,"
Toggle punctuation between Chinese and English -Ctrl+ Period
I hope it helps you!