Question

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Assign formal charges to all atoms in the following Lewis diagrams. (a) (b) (d) (c) : Br: 0 of H -Br: : A pt :: :0: F: Br: pt Cl pt As 1 pt hydroxyl O Br doubly bonded O F 1 pt terminal O S singly bonded O 1 pt H 1 pt on all the atoms in the following Lewis diagrams. Determine the formal charges t B N- pt N-0- and pt 1 pt 1 pt Which one would best represent bonding in the molecule NOF? nt A.What is the hybridization of the central atom in PFs? Hybridization t What are the approximate bond angles in this substance? Bond angles ot pt pt B. What is the hybridization of the central atom in CIF5? Hybridization 1 pt 1 pt What are the approximate bond angles in this substance? Bond angles 1 pt : a- NOOD

Answer 1

Formal charge = No. ofvalence és on atoni] - { no. of bonds + no. of non-bonded ez as lo c i 7.-(4+0) = + 3. 30-«- • - hydrol. O: 6. - (2+2) = 0 10: terminal 0 : 6.-.(6+1+6)= -1 HITE (1+0) 2.0 given Note: This formal charges are for this po specific structures of HClOy Stable structure of Hciog is, 10=el-ön. 20:31

S= 5-'(5 +0) = 0 P! Bri (1+6 - 0 ! Br: Br: 7- Sió (2+4) = 0 TOHO . I: 7-17 + 0) = doubly bonded 0:16 -(2+4)=0 singly bonded 0 : 6 -(1+6)=-1. AS — F! As: 5 - (3+2) = 0 F: 7- (1+6) = 0 : : : O= Ñ - 8: NO OF: N: 5-(2+4)= -1 0:6-(3+2) = +, N! 5- (3+2) = 0 0:6-(2+4)=0 / F: 7-(1+6)=0 F: 7 - (1 + 6) = 0 Since, the structure B has no charge separation (with respect to formal chariger), it is the best representation of boriding in NOF,

. ..^> Hybridisation, HP < (+N-C+) , whene, va valence és : Ipfs] p is the central atom. Na no. of sigle bonds P: v=5, N=5, C=0,150 surrounded. - (or mono valent atoms) C = Saladino cationic So HE (5+5 -0+) = 5 ; charge. A = so, hybridisation is, spad Andonie chorege. eq; equitorial : ax! axial. Z Z F Foq P Fax = 90° 2 Fax P Four = 180° L. Feq P. Feq = 120° BY CLFsI a is the central atom. So, C1: v= 7, N=5,2 -0; A-o So, #- * (7+5–0+0) = 6 So, hybridizatim is spid? Henie geometry is octahedral. But, rshape will be distorted due the Ip-bp repulsion . both ame] the LF UP bond angle would be just desi than 90. [It crould be used 869 capprox)] ! Fo-CD T : Isame J 3C But, from the geometry, idta ideally it should be 90°.