Radius of second orbit in Be3+ ion will be ( r0 is Bohr's radius )

  1. A

    2 r0

  2. B

    0.5 r0

  3. C

    r0

  4. D

    4 r0

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    Solution:

    rn = n2Z r0 ; n=2 and Z=4 for Be3+ rn =224 r0 ;

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