Another way to write isotopes is to write the name of the element then add the mass number after a dash, for example, "C is carbon-14. Why isn't the atomic number needed for this notation?

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )