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If the ionic radii of \( \mathrm{K}^{+} \)and \( \mathrm{F}^{-} \)are about \( 1.34 \AA \) each, then the expected values of atomic radii of \( \mathrm{K} \) and \( \mathrm{F} \) should be respectively:
(A) \( 1.34 \) and \( 1.34 \AA \)
(B) \( 2.31 \) and \( 0.64 \AA \)
(C) \( 0.64 \) and \( 2.31 \AA \)
(D) \( 2.31 \) and \( 1.34 \AA \)
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