For the of oxygen atom, which of the following statements is correct?

Question

For the  of oxygen atom, which of the following statements is correct?

Canvas Classes · Accepted Answer

Evaluating each statement for oxygen (Z = 8, config: ):

(a) ✗ —  for 2s ≠  for 2p. The 2s orbital penetrates closer to the nucleus than 2p, so 2s electrons experience a higher effective nuclear charge than 2p electrons. .

(b) ✗ — In multi-electron atoms, 2s and 2p have different energies because 2s penetrates more and is stabilized more.  (2s is lower in energy).

(c) ✗ —  for 1s ≠  for 2s. 1s electrons experience much higher  (≈7.7 for O) than 2s electrons (≈5.0 for O) because 1s electrons ar

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