[Solved] Using Hash # characters in equations

[techno-mole]

hello i am trying to write out some equations for an assignment, but im having trouble entering the hash symbol (#) if i enter it into the formula editor i get a little red question mark (i need to write Mg# = Mg over Mg + Fe (this bit in super script 2+) but like i said im having trouble with the hash sign.

any help would be appreciated.

cheers.

Title Edited. A descriptive title for posts helps others who are searching for solutions and increases the chances of a reply. It also makes it easier for others who come searching for the same solution. (TheGurkha, Moderator).

[TheGurkha]

The hash character is used as a command for alignment, especially in matrices. The way to get it accepted as a 'normal' character is to use quotes.

"#" means use it as a character, not as a command.

This might be useful: Math commands - Reference.

If this has answered your question please go to your first post and use the Edit button, and add [Solved] to the start of the title. You can use the green tick icon at the same time if you like.

[techno-mole]

cheers for the help.