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JIPMER2017ChemistryStructure of Atom

The electrons identified by quantum numbers n and l , are as follows I. n=4, l=1 II. n=4, l=0 III. n=3, l=2 IV. n=3, l=1 If we arrange them in order of increasing energy, i.e. from lowest to highest, the correct order is

Options

  1. AIV < II < III < I
  2. BII < IV < I < III
  3. CI < III < II < IV
  4. DIII < I < IV < II

Correct answer

A. IV < II < III < I

Step-by-step solution

(i) More be the sum of n+1 more be the energy. (ii) For same sum, the more value of n , have higher energy. n+1 for (i) 4+1=5 (ii) 4+0=4 (iii) 3+2=5 (iv) 3+1=4 Correct order is (iv) (ii) (iii) (i)

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