chemistry help polar vs nonpolar

[melissajohn]

can someone please check over my work to see if it is right or wrong? thanks

N2- nonpolar
HF- polar
ClF- polar
S8- nonpolar
CF4-–nonpolar
CH2F2 –polar
CHF3–polar

for polar:
HF- polar

δ+--->δ-
H-----F


ClF- polar

δ+--> δ-
Cl-----F


CH2F2 –polar
δ+---> δ-
CH2----- F2


CHF3–polar

δ+---> δ-
CH----- F3