a) PbO2- tlenek ołowiu(IV)
O=Pb=O
PbO- tlenek ołowiu(II)
Pb=O
b) PH3
H-P-H
I
H
c) Sr3N2
Sr=N-Sr-N=Sr
d) Ga2S3
S=Ga-S-Ga=S
e) CaF2
F-Ca-F
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a) PbO2- tlenek ołowiu(IV)
O=Pb=O
PbO- tlenek ołowiu(II)
Pb=O
b) PH3
H-P-H
I
H
c) Sr3N2
Sr=N-Sr-N=Sr
d) Ga2S3
S=Ga-S-Ga=S
e) CaF2
F-Ca-F