(i) In a hydrogen atom, the energy of an electron in an orbital is determined solely by the principal quantum number (n), not by the shape of the orbital (s, p, d, f). Therefore, all 4s, 4p, 4d, and 4f orbitals have the same energy.

(ii) In a multi-electron atom like zinc, both the principal quantum number (n) and the shape of the orbital (s, p, d, f) determine the energy of an electron in an orbital. The energy increases in the order 4s

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(i) In a hydrogen atom, the energy of an electron in an orbital is determined solely by the principal quantum number (n), not by the shape of the orbital (s, p, d, f). Therefore, all 4s, 4p, 4d, and 4f orbitals have the same energy.

(ii) In a multi-electron atom like zinc, both the principal quantum number (n) and the shape of the orbital (s, p, d, f) determine the energy of an electron in an orbital. The energy increases in the order 4s < 4p < 4d < 4f. This is due to the shielding effect and penetration effect of electrons.

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(i) In a hydrogen atom, the energy of an electron in an orbital is determined solely by the principal quantum number (n), not by the shape of the orbital (s, p, d, f). Therefore, all 4s, 4p, 4d, and 4f orbitals have the same energy.

(ii) In a multi-electron atom like zinc, both the principal quantum number (n) and the shape of the orbital (s, p, d, f) determine the energy of an electron in an orbital. The energy increases in the order 4s < 4p < 4d < 4f. This is due to the shielding effect and penetration effect of electrons.

hat is the sequence of energies of 4s, 4p, 4d and 4f-orbitals in (i) a hydrogen atom and (ii) a zinc atom ?

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