Question

1. Give the number of lone pairs around the central atom and the geometry of the ion CIO, A) O lone pairs, linear 1 lone pair, bent C) 2 lone pairs, bent D) 3 lone pairs, bent E) 3 lone pairs, linear B) 2. Predict the geometry and polarity of the CS, molecule. A) linear, polar B) linear, nonpolar C) tetrahedral, nonpolar D) bent, nonpolar E) bent, polar (iv) PF, (v) BF, 3. Which of the following substance is/are planar? (1) SO; (ii) SO, (iii) NO, A) only (i) and (ii) B) only (i), (iii), and (v) C) only (iv) D) all are planar except (iv) E) all are planar except (ii) 4. Which of the following correctly lists species in order of increasing bond order? A) C2 <Liz <Bez <N, B) Bez <LI> <C> <N; C) N < Bea<li> <a D) N; <C> <li> <Bez E) Bez <C> <N; <Liz

can you please explain each answer

Answer 1

Solution:-lone pairs ao urd the central atem and the geeme try of es : Number of valence electson of central atom = 7 Number axygen atem tinked oy sngle bond =i Numben of axygen atem unked double bond =1 a follouw:- the geemetry of uo But due to epulsion between the lone pas of the central .atem Chlenne , the geemetm of the moleule , willbe clo Bent as follews- Theue aoua; Numbeu cf lene pa aeaund the certaal atem 2 Bent Greemetry oclos Hence, the corect option is (c) Solutien:-2 Gteometny and polasuity of ofcs2 meleule i- Draw the lewis dot structuue to find the geemetay the moleule . he valency ocauben aterm s =4 Numbeu atem foined teo coabon atem by double bend-2 Tus, the ele clvonic geemety will be uneau . Theua wibe no leme pair en the central atem Ccaubo1) the CS 2ined with y Both the gulphu atems ase 6. CamScanner

Two o them aue used m bend fomahon with caubon atem and remaining foe valence electveng wil be present ag leme pais on Sulphuu atem . But theae will he mo eect en hape the moleule elect ron vregio dstibution auaund the centaal atem and hence , "men- polau". the hape the mole ule nea" Hence, the ymmetvic Hence, the covect option (B) Solution: So3 On the basis of USEPR theey.the moleulaı shape of Soa wia ageral Plana be cause theue i vepuluên between the valence Ahell electron pan Ce valence electren Sulphus To mimimise the be in oppesite side trigenal planan eulaion they the cental atem qvng aue ferced to a molecular hape . So3 IS aplanau mole ule Sog2 the ulphe atem &Ap3 hybnidsed, the geemetry o- will he tetrahedsal but the mole ular geemety auound the Sulphue atom is PyramidalSo, Herse planasi malacule this isnat Scanned with CamScanner

Frem the lew dot stuctue, thee ase thvee around the central atom Nitragen. Ard these theee exygn atem asce will pugheadl mte tragenal planas moleculasi geemetry & hape a plane giun the No ateme &m a PFS The valence e- of central atem is S. Thee f them ae uged bend omatien withloune atem and wi aa peesent as a lone poaien electsons two phoagphois aom vesults im tetrahedsal elatenic ge ometny 4 tageral pyomidal male cular geometny Tt i a Nen-plenau" maleule F v) BF3 Boven hag thee used m bend fomatien wit luune atems. tnence, the valence electvers and ala these aue mole ule tangular plana. Bfz š Plenas BP3 SolutionD C2 Atomic numbeu -6 Total me. o es mC (2e Eiectveme cenquation C22 Amti-bonding Cending C5-27 e Bend ordau Scanned with CS CamScanner

Atemic numbeu Total e's m U- 6 Etectvonic Ceniquatien Bond odau 4-2 Ве> Atemic mumaou = ETectrone conliquatien Cis) C2 "C2s Bend ode C2-2J Cis)2 2 N2 Atemic mumbeu = 7 Tatal es m N Electrene cenfigucati o r8-2J3 Bend end e Increasng endeu ofBerd endia Be, u N2 Hence, the corect optien (B) Scanned with CamScanner