Chemistry Structure of Atom Quantum Number, Electronic Configuration and Shape of Orbitals Single Correct MCQ
Published on: August 13, 2026

Study the orbital diagrams of two atoms ‘X and ‘Y’. which subshell will be more stable and why?

A
X, exchange energy is maximum, so is stability.
B
Y, exchange energy is maximum, so is stability.
C
X, exchange energy is minimum, so stability is maximum.
D
Y, exchange energy is minimum, so stability is maximum.

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Text Solution

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The correct answer is:
A

In ‘X’ one electron can exchange energy with 5 orbitals while in ‘Y’ energy exchange is between 3 orbitals hence half – filled orbitals are more stable.

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