The correct order of the penetration effect of different orbitals is ..........

Explain $(n + l)$ rules for the energy of an orbital with an example.

The five valence electrons of $P^{15}$ are labeled as $A, B, X, Y, Z$ as shown in the figure. If the spin quantum number of $B$ and $Z$ is $+\frac{1}{2}$,identify the group of electrons that share three identical quantum numbers.

The probability of finding an electron in the $p_x$ orbital is

What is the lowest value of $n$ that allows $g$ orbitals to exist?

Which of the following rules or principles states that "No two electrons in an atom can have the same set of four quantum numbers"?