The correct option is C P2L,RL,PQ and RQ2
Based on the given electronic configurations, it can be inferred that,
L represents O atom,
Q represents Cl atom,
P represents Na atom and
R represents Mg atom.
So,
The compound formed between L and P will P2L.
The compound formed between L and R will be RL.
The compound formed between P and Q will be PQ.
The compound formed between R and Q will be RQ2.