The correct statement/s among the following is/are:

Options

AThe probability density $\left(\psi^2\right)$ for a hydrogen atom is zero at $r=0$ .
BIn an atom, orbitals with the same quantum number have different energies.
CThe energy of a given orbital with same principal quantum number decreases as the atomic number ' $Z$ ', increases.
DFor a given atomic number, the configuration having the maximum number of parallel spins is of the lowest energy than any other arrangement arising from the same configuration.

Correct answer

D. For a given atomic number, the configuration having the maximum number of parallel spins is of the lowest energy than any other arrangement arising from the same configuration.

Step-by-step solution

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