Arrange all elements of group $1$ in increasing order of their ionic radius.

  • A
    $Li^{+} < Na^{+} < K^{+} < Rb^{+} < Cs^{+} < Fr^{+}$
  • B
    $Fr^{+} < Cs^{+} < Rb^{+} < K^{+} < Na^{+} < Li^{+}$
  • C
    $Li^{+} < K^{+} < Na^{+} < Rb^{+} < Fr^{+} < Cs^{+}$
  • D
    $Na^{+} < Li^{+} < K^{+} < Cs^{+} < Rb^{+} < Fr^{+}$

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