The family name Haber was a common one in the area, but Fritz Haber's family has been traced back to a great-grandfather, Pinkus Selig Haber, a wool dealer from Kempen.
Na splošno velja, da večja razlika v elektronegativnosti dveh atomov pomeni večjo polarnost vezi med njima in da bo atom z večjo elektronegativnostjo negativni pol nastalega dipola.