Question

1) Draw Lewis structures for arsenic trifloride oxide, OASF. (a) without expanding the octet on the central atom and (b) with an expanded octet on the central atom. Note that As is the central atom; all other atoms are terminal. Based on the formal charge count, indicate which Lewis structure is the best. Show the calculation of all formal charges on all unique atom types. Do your rough work elsewhere. Provide only the final and NEAT structures below. Messy work due to excessive erasures will NOT be graded. (a) (b) 2) Draw the Lewis structure of oxalic acid, H.C.O. It has a single C-C bond and no C-H bonds. Draw all resonance structures and explain which one(s) is(are) the most stable.

please help im very confused!

Answer 1

* molente formada is OAS F3 nungen at vakance elembra (0) + ICAs) + 3111 El(6) +1(5)+317) 6 +5 +21 Formal change: VE-NE-BEL VE = Nunth d Valance elentra NE = Naugh od nan sending elentra BE = number of Kandins elemben cuithout a). Lewis ftruture - expanding octel- 0:00 Fica AS : 5-0-672 C-AS-P Cimo = 6-6-22 Fcon E: 7-6-2/2 (6) =0 :7): inith expanded oathe. F.com As. -5-0-10% fenoir :6-4-4 Front 7-6- -10 -10 Ben 2 (2) oxalic And lewis forum H₂ roue 2 (H) +2011+ 410) 5261 +206 +416) . 380 Софи s- : : 10: mopt rett Shrutora Resonan

The Lewis structure with minimum formal charge is more stable.

There the expanded octet Lewis structure is best for OAsF4

For oxalic acid also miniumm formal charge structure is most stable.