Question

The first ionization potential of Na, Mg, Al, Si are in the order of : ( give justification)
1) Na < Mg > Al < Si
2) Na > Mg > Al > Si
3)Na < Mg < Al > Si
4) Na > Mg > Al < Si. Justify

Answer 1

2) Na>Mg>Al>Si is correct because Na is most reactive in all.