What symbol is used to represent the mass of an electron?

The mass of an electron is typically represented by the symbol "me." This designation is standard in scientific literature, particularly in fields such as physics and chemistry.

In terms of context, "me" is derived from the initial letters of the word "electron," and it is used consistently to denote the electron's mass, which is approximately (9.11 \times 10^{-31}) kg. This symbol helps avoid confusion with other particles and maintains clarity in scientific discussions.

The other symbols presented do not correspond to the mass of an electron. For example, "Mn" often represents the mass number of the element Manganese or can refer to other elements in the periodic table. "Mh" and "h" generally refer to other physical constants or quantities, without any direct connection to the electron's mass. Hence, "me" is the correct symbol to use in this context.