The correct electron configuration of Chromium is………

The rule violated in electron configurations of Chromium and Copper is …………

Atoms having these orbitals are stable

When l = 3 the maximum number of electrons that can occupy in the corresponding sub-shell is ……………

The number of orbitals present in a given shell is …………

The orbital that is having least energy among 3p, 4s, 3d, 4p is …………………

Which of the following is the correct configuration of $O^{2-}O^\{2-\}$……………. 

Which one of the following has the electronic configuration of $1s^{2}2s^{2}2p^{6}1s^2\backslash ;2s^2\backslash ;2p^6$?

Magnetic quantum number of the last electron of Sodium is ……………

The maximum number of electrons accommodated in a subshell with Azimuthal quantum number (angular momentum quantum number) l is …