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Chemistry · PYQ NEET UG 2019(1)
हिन्दी4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The CORRECT option is ______.
Correct answer · Option 4
\( 5f > 6p > 5p > 4d \)
Explanation
Using (\( n + l \)) rule, energies are: \( 5f \) (\( 5+3=8 \)), \( 6p \) (\( 6+1=7 \)), \( 5p \) (\( 5+1=6 \)), \( 4d \) (\( 4+2=6 \), with higher \( n \) for \( 5p \)). Decreasing energy order: \( 5f > 6p > 5p > 4d \).
