The atomic orbitals are progressively filled in order of increasing energy. This principle is called as

The angular part of the wave function for an orbital is given by $\psi_{(\theta, \phi)} = \left( \frac{15}{4\pi} \right)^{1/2} \sin \theta \cos \theta \sin \phi$,where $\theta$ is the angle from the $z$-axis. The angular node$(s)$ are:

For $s-$orbitals,since $\psi$ (orbital) is independent of angles,the probability $(\psi^2)$ is

The $39^{th}$ electron of an element enters which of the following subshells?

If $n = 6,$ the correct sequence for filling of electrons will be

The correct set of quantum numbers for the unpaired electron of a chlorine atom is: