Question

Predict the hybridization of the highlighted atom in each of the following molecules:

a. CH4

b. H2C=O

c. BH4-

d. HC≡N

Answer 1

To know the number of valency electrons for an atom you need to know the group of that element . For example

IIIA group elements contain 3 valency electrons

IVA -4electrons

VA - 5electrons

VIA - 6 electrons

VIIA - 7 electrons

H atom one electron

Pind the hyboidisa Hon op a cents To atom the se aute ways method: Calcula te alenty elechron of atem Thet total n ep valenry eleche mean then 2- IP V.E. 8 aie 56 Thect then 8 8 v.E. 4 56 V.E. hen a 18 56 ey get answes doing So we Lineat SP hy boidisation Tougond pbna sP hbri di sation 3 4 sp hy boidiSationTetrahed io SPid hyboidi aationTsigen spd ny berdi sahion by baidi cation i py sa midof octahed sol 57 6 Pentagond bi py mi spid3 CH4 a. CH4 Totel valene electbonA 4t 4x1 4 t4 2

Hy baidi ca Hon op Cotbon csp3 TV.E. 2x+46 24 6 12 12 8 So devide by 8 812a I+2 3 vemindes is lesr de vide t by 2.Then add tetad all devides SPy bai diSation Ansuer 3 Hac o Sp B H4 CO T.V.E. 3 4 + C-ve chage +| +ve charge-L 8 Pevide y 8-4SP 2 5 BH4

3 HCEN T.V.E + 4 +5 10 108 devide by 29SP hyboi dndh 1+1 2) 2 H-CEN SP tybaidistion Anothe aay Lone pais op elechon count stna le bond mono valent atoms VA SA DA .c. one No lone hs e e lone lone lone paur pauy +Two bends paiss +one bond +3 bond

No PoSmula 4 No. P bonds+No. p ore paiz eutanl moleuler chaged crplecules No need to add/ substrad p ve/+ve changP xe ansuer 1s /3/4/slel ren bybsidisafion tA sel sp/sP/ spd/spS/s CH4 4 to Sp3 Ha C 3T +0 3 ラ3 Spr SP SP

BH4 4 t0 C Donttw 9bout -ve chalge) -4 hy boidi ation H-CEN 1 + 2 SP ヲ SP SP