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Account for the follwing : (i) Bi(v) ...

Account for the follwing :
(i) `Bi(v)` is a stronger oxidizing agent then Sb(v).
(ii) N-N single bond is weaker then P - P Single bond.
(iii) Noble gases have very low boiling points.

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Because of interelectronic repulsion showing to small bond length of N-N/smaller size of nitrogen atom.
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