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The 4s subshell has more energy than 3p subshell. (a) Is it true? Justify your answer. (b) State Aufbau principle. |
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Answer» (a) Yes. For both 4s and 3p subshells the (n+l) value is 4. But 4s, with high value of ‘n’ has higher energy. (b) Aufbau principle – In the ground state of the atoms, the orbitals are filled in order of their increasing energies. |
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