The distance between ${H^ + }$ and $C{l^ - }$ ions in $HCl$ molecule is $1.28\,\mathop A\limits^o $. What will be the potential due to this dipole at a distance of $12\,\mathop A\limits^o $ on the axis of dipole......$V$
  • A$0.13$
  • B$1.3$
  • C$13$
  • D$130$
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