Answer
a) $B_{2}O_{3}$
b) $AsF_{5}$
c) $N_{2}O$
d) $SCl_{6}$
Work Step by Step
a) Boron Trioxide --> $B_{2}O_{3}$
b) Arsenic pentafluoride --> $AsF_{5}$
c) Nitrogen Dioxide -> $N_{2}O$
d) Strontium Hexachloride --> $SCl_{6}$
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