Consideringthe elements B, C ,N, F andSi thecorrectorderof their non- metallic character is : (a) B gt C gt Si gt N gt F ( b) Si gt C gt B gt N gt F( c) F gt N gt C gt B gt Si ( d)F gt N gt C gt Si gt B

Consideringthe elements B, C ,N, F andSi thecorrectorderof their non-

1.	Consideringthe elements B, C ,N, F andSi thecorrectorderof their non- metallic character is : (a) B gt C gt Si gt N gt F ( b) Si gt C gt B gt N gt F( c) F gt N gt C gt B gt Si ( d)F gt N gt C gt Si gt B
Answer» Solution :In aperiodthe NON metalliccharacterincreases fromleftto right . ThusamongB ,C ,NAND f,non - metalliccharacterdecreases inthe ORDER `: F gtN gt C gt B` However withina group non- metallic character DECREASES from top to bottom. ThusC is morenon- metallic than Si.Thereforethe CORRECT sequence ofdecreasingnon- metalliccharacter is `: F gt N gt C gt B gt Si` i.e.,option ( c) iscorrect.