In a hydrogen atom, the distance between the electron and proton is $2.5 \times {10^{ - 11}}\,m$. The electrical force of attraction between them will be

  • A

    $2.8 \times {10^{ - 7}}\,N$

  • B

    $3.7 \times {10^{ - 7}}N$

  • C

    $6.2 \times {10^{ - 7}}N$

  • D

    $9.1 \times {10^{ - 7}}N$

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