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JEE Main Chemistry question

ChemistryStructure of AtomJEE Main

The electrons identified by quantum numbers and : I. ; II. ; III. ; IV. can be placed in order of increasing energy, from the lowest to highest, as **[J & K CET 2003]**

Answer: (A)

Solution

I is , II is , III is , IV is . Using the rule (and to break ties): $2p(n+l=3) <

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Question ID VK-132278