The valence shell electronic configuration of $C{r}^{2+}$ ion is

Q. Valence shell electronic configuration of $C{r}^{2+}$ is:

Q. Valence shell electronic configuration of ion of $N_2$ molecule is written as $\left(\sigma 2s{)}^2\right({\sigma }^{\ast }2s{)}^2\left(\Pi 2p{)}^4\right(\sigma 2p{)}^2({\Pi }^{\ast }2p{)}^1$. Hence the bond order of Nitrogen molecular ion is:-

Q. Valence shell electronic configuration of Barium is:

Q. The electronic configuration of valence shell of $Cu$ is: