Which of the following statements is/are correct?

Options

A. The energy of an electron in a many electron atom generally increases with an increase in value of n, but for a given the lower the value of l, the lower the energy
B. An electron close to the nucleus experiences a large electrostatic attraction
C. For a given value of n, an s- electron penetrates of the nucleus more than a p-electron, which penetrates more than a d-electron and so on.
D. Non is correct

Answer

A, B, C