Why is a $3d$ orbital in transition metal higher in energy than a $4s$ orbital?
629
How are Quantum Mechanical energy levels related to atom shells?
43141
Why is the relationship between atomic number and density not linear?
46509
Energy level below ground state
11529
What is the quantum mechanical explanation of the octet rule?
67978
Huge confusion with Fermions and Bosons and how they relate to total spin of atom
131091
Srednicki's Path Integrals: Ground-State to Ground-State Transition Amplitude in the Presence of a Perturbation
485
Density of Solid States of Compounds
60471
Electron shells in atoms: What causes them to exist as they do?
21186
Why is the second order perturbative correction to the ground state energy always down?
135300
Energies and numbers of bound states in finite potential well
104973
Why are hydrogen energy levels degenerate in $\ell$ and $m$?
77742
Queries about rotational groups $\mathrm{SO}(3)$ and $\mathrm{SU}(2)$ in QM
89920
How does the uncertainty product $\Delta x \Delta p$ behave for the bound states of the triangular potential?
87962
Why is $\langle \textbf R \rangle =Tr \rho R$ here $\rho$ is the state density matrix
58445
What does the Canonical Commutation Relation (CCR) tell me about the overlap between Position and Momentum bases?
50314
Can tetration 'escape' the complex plane?
101338
why path of an electron in an orbit is uncertain?