The name ununhexium is temporary and imposed by IUPAC rules for naming artificial elements; "un un hexium" is in Latin 116 (the atomic number of uuh).
Usually Jim or Jimmy is short for James
Tunis
"your name is" is correct English and when used in this way means both your full name or a part of your name (usually surname, depending on the context). "your names are" is also correct English, but...
It is the name of its genus.