Question

Draw the Lewis structure for each of the following species, and determine if each of them follows the octet rule; if not, identify the type of octet-rule exception. 1) O2 [Select ] 2) NO2 Select] 3) BeH2 [Select] 4) ASF4 [Select]

Answer 1

dins Octet Rule The cetet ule is chemical ule ef thumb that afleets oberiation that elementi dend to bord n uch that each atem has elght chetrons in t elence thell, giubng it the ame electrenle ontiguratis Ex Exceptions to the octet Rude 1, less than van ctet; The Contral atam has leass ithan 8 eleotronl. Occour with BC4), BCe) vand dile 2) he compaund hau an vodd numbae af Velence ebetrons 3) melecules wuith exhanded valumce thells. steps to draut leus atnuctuwe of Valance eletron o) Hnd tatal no b) Choode a Central alem c) Detemired the nunbeu af bonds in maleoulo

Selution t 1. O2 Ehebonic Configuration = 15, 25, 2p wanls a e for Canplete bedate tty o dtructue Shauld be both orypen camplete its orbital octets reub follewed 2. NO2 N cheuld be Center elenaent.alon 2S2 2P (3e wat 1s2 25, 2P 2e Wnt b.N.L of N= 1s e) Cenmplete octata 7e a) Leas than an octat, ef N (7e)

c Be He De Shauld be leuter aten E.C of Be- 15 2s2 E.C of H= IS' (ie)ception Be H че Ledd than an octate anly ye As fu As shaulel be Centeu clun [AJ 3d 104s24P (se wents) E.c of As= BCof fu = (neJ 2s, 2ps (te 1eat) 10e of: As 8e f Be :p h 8e malevule nuith expanded Uelance shells.