Which of these names and formulas do NOT match correctly?
Responses

MgF2 : magnesium fluoride
MgF 2 : magnesium fluoride

HgCl : mercury (II) chloride
HgCl : mercury (II) chloride

Fe(NO3)3 : iron (III) nitrate
Fe(NO 3 ) 3 : iron (III) nitrate

N2O4 : dinitrogen tetroxide
N 2 O 4 : dinitrogen tetroxide