a) FeH3
H-Fe-H
I
H
b) PbS2
S=Pb=S
c) CaCl2
Cl-Ca-Cl
d) Cl2O5
O=Cl-O-Cl=O
II II
O O
e) Cr2O3
O=Cr-O-Cr=O
f) PbBr2
Br-Pb-Br
g) K2S
K-S-K
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a) FeH3
H-Fe-H
I
H
b) PbS2
S=Pb=S
c) CaCl2
Cl-Ca-Cl
d) Cl2O5
O=Cl-O-Cl=O
II II
O O
e) Cr2O3
O=Cr-O-Cr=O
f) PbBr2
Br-Pb-Br
g) K2S
K-S-K