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Physics Chemistry

Entry Test MCQ :: MCAT ECAT Chemistry Paper

  Atomic number of Mn is 25 what is the electronic configuration in the ground state
[A]. 1s2 2s2 2p6 3s2 3p6 3d7[B]. 1s2 2s2 2p6 3s2 3p6 4s2 4p5
[C]. 1s2 2s2 2p6 3s2 3p5 3d10[D]. 1s2 2s2 2p6 3s2 3p6 4s23d5

Answer: Option D
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