Answer
Typical ground state electronic configurations are as follows:
i. Group-2: $1s^{2}2s^{2}$
ii. Group-7: $[Ar]3d^{5}4s^{2}$
iii. Group-15: $1s^{2}2s^{2}2p^{3}$
Work Step by Step
Given above
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.