1) Using only a periodic table (without referring to the Electronegativity Table unless necessary) indicate the polarity of the bonds shown below. If...

1) Using only a periodic table (without referring to the Electronegativity Table unless necessary) indicate the polarity of the bonds shown below. If the bond is nonpolar, say so:

a) N-O

b) C-O

c) C-S

d) Cl-I

e) H-Cl

f) H-K

2) Sketch each species to show correct molecular geometry, bond dipoles and then state whether each species is polar or nonpolar. If resonance structures exist, use the most stable one:

a) NH3

b) COS

c) ClBr2