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Which outcome regarding electronic behavior occurs when hydrogen's 1s orbital compresses?

A)Energy levels decrease substantially
B)Ionization potential substantially increases
C)Nuclear shielding effects proportionally increase
D)Spin-orbit coupling becomes inconsequential

💡 Explanation

Ionization potential significantly increases because *quantum confinement* raises kinetic energy by inversely scaling the orbital because de Broglie wavelength lessens. Therefore, more energy is needed to remove the electron rather than electron shielding, which causes a decrease in potential energy.

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