The Lewis structure of PF3 shows that the central phosphorus atom has __________ nonbonding and __________ bonding electron pairs.

Is the answer 1, 3
Is it 1 because it asked for PAIRS- so there are two electrons not bonded- so one pair?

2 answers

Yes, I think so. The person making the question could have made it clearer by writing "phosphorus atom has ???? non-bonding electron pairs and ?????bonding electron pairs."
https://www.google.com/search?q=lewis+structure+PF3&hl=en&client=firefox-a&hs=deY&tbo=u&rls=org.mozilla:en-US:official&tbm=isch&source=univ&sa=X&ei=70fzUNzgFbP02wXQtoDIDA&ved=0CEsQsAQ&biw=846&bih=468
Thank you sir.