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b) Fe2O3
S
//
Fe
\
S
/
Fe
\\
S
c) SrBr2 Br-Sr-Br
d) Au2O3
O
//
Au
\
O
/
Au
\\
O
e) N2O5
O O
\\ //
N
\
O
/
N
// \\
O O
f) SO2 O=S=O