Electronic Configuration, Occurrence — Prelims Questions

Which of the following electronic configurations represents a Group 15 element?

Which of the following statements regarding the occurrence of Group 15 elements is INCORRECT?

Which Group 15 element exhibits the most stable +3 oxidation state due to the inert pair effect?

What is the primary reason for the exceptional stability of the $N_2$ molecule?

Which of the following elements is a metalloid in Group 15?

What is the full ground state electronic configuration of Phosphorus (P), given its atomic number is 15?