The atomic weight of an element is double its atomic number. If there are four electrons in the $2p$ orbital,the element is:

The magnetic quantum number is related to:

Choose the pair whose ions have the similar electronic configuration.

The subshell that arises after $f$ is called $g$ subshell.
$(a)$ How many $g$ orbitals are present in the $g$ subshell?
$(b)$ In what principal electronic shell would the $g$ subshell first occur and what is the total number of orbitals in this principal shell?

Where does the electronic configuration occur in an atom?

The shape of $s$-orbital is