Correctorder of theionizationenergyof C, N, O, F is

1.	Correctorder of theionizationenergyof C, N, O, F is
Answer» `F lt N ltlt C lt O ` `C lt N lt O lt N` `C lt O lt N lt F` `F lt O lt N lt C` SOLUTION :Alonga period`Delta_(i)H_(1)`increasesfrom leftto right(i.e.,from Cto F )DUE todecreasingatomicsizeand increasingeffective nuclearcharge . But dueto morestableexactly HALF- filledelectronicconfigurationN hashigher `Delta_(i)H_(1)` thanthat of O Thus ,the overallincreasesin theorder : `C ltO lt N lt F` i.e.,option( c) is correct

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