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Periodic Table and Periodicity question

2019 · 12 Apr · Shift 2 · Q17
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Periodic Table and Periodicity question

2019 · 12 Apr · Shift 2 · Q17

JEE MainChemistryPeriodic Table and PeriodicityMCQ+4 / −1
Among the following, the energy of 2s orbital is lowest in :
  1. A
    Li
  2. B
    H
  3. C
    Na
  4. D
    K
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