Which of the elements Na, Mg, Si and P wouldhave thegreaterdifferencebetweenthe firstand thesecondionizationenthalpies . Brieflyexplainyour answer.

Which of the elements Na, Mg, Si and P wouldhave thegreaterdifferenceb

1.	Which of the elements Na, Mg, Si and P wouldhave thegreaterdifferencebetweenthe firstand thesecondionizationenthalpies . Brieflyexplainyour answer.
Answer» SOLUTION :AmongNa, Mg ,Si and P , Na isanalkalimetal. Ithas onlyone electronin thevalenceshell thereforeits `Delta_(i)H_(2)`is verylow . However afterremoval of theone electron . It acquiresneongas configurationi.e.,`Na^(+)(1S^(2)2s^(2)2p^(6))` . Thereforeits `Delta_(i) H_(2)` is expectedto be veryhigh. CONSEQUENTLY thedifference in firstand secondionizationenthalpieswouldbe greaterin case of Na. Howeverit maybe notedhere THATIN caseof Mg ,Si and Palthough their `Delta_(i) H_(1)`will be muchhigherthanthat of abut their`Delta_(i) H_(2)`will be muchlower than thatof Na . As aresultthe difference intheirrespective`Delta_(i) H_(1)` and `Delta_(i) H_(2)` would bemuch lowerthan thatof Na.