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D and F Block Elements question

2019 · 10 Jan · Shift 2 · Q19
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D and F Block Elements question

2019 · 10 Jan · Shift 2 · Q19

JEE MainChemistryD and F Block ElementsMCQ+4 / −1
The 71st electron of an element X with an atomic number of 71 enters into the orbital :
  1. A
    4f
  2. B
    6s
  3. C
    6p
  4. D
    5d
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