# In which of these options do both consituents of the pair have the same magnetic moment-

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In which of these options do both consituents of the pair have the same magnetic moment-
A. Zn^(2+) and Cu^(+)
B. Co^(2+) and Ni^(2+)
C. Mn^(4+) and Co^(2+)
D. Mg^(2+) and Sc^(+)

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E_(n) = (13.6z^(2))/(n^(2))
as move away from the nucleus the energy increase, hence energy is maximum at infinite distance from the nucleus.