Question

five regions of electron density electron geometry: -- bond angle: - hybridization: - six regions of electron density electron geometry: - bond angle: - hybridization: - 6. + -/0.36 points What is the hybridization of the central atom in each of the following? BeF2R-Select-- 9 BCI ---Select- SeF---Select--- PCI ---Select--- 9 Submit Answer 7. +-/0.36 points Use valence bond theory to describe the number and types of hybrid bonding orbit (a) BCI- type of hybridization: sp-hybridization

Answer 1

By Valerce Shell Election Pair Repulsion (VSEPR) theory hybridisation of central atom is decided by sum of lone pair of elections han bonded) on central atom and Crumber of sigme (siryles bonds it form. Pi (a) bonds do not govern hybridisation. > of Number of lone pairs + Number of o-bonds = 2 : sp huybridisation of Number of lone pais + Number of r-bonds = 3: sp² hybridisation of Namber of love pais + Number of r-bonds = 4 i sp² hybridisation of Number of lone pairs + Number of r-bonds = 5 : sp²d hybridisation a on Befa Atomic number of Be=4 (15² 25²) Valence shell of Be Couter most only participate in bonding) = 25² Ground state excited stati - now I can donate l e each to zs, one o 2p to form T-bonds Beky T M Ho 25, 2, form of a bonds : sp hybridisat) 2s 2p (one) 1. No non-bonded és, to line pai=o Also T-bonds =2, lone pair =0 1 Bein . sum of both = 2+0 = 2 sp hybridisation of " Bef. Ground 2 vacant) ? (Vacant) =) On B Cl₂ Atomic number of B = 5 - Electronic configuration of B = 15, 25², 2p' valence shell - Ground state of B = M OD . Excited state of b= CD ce donates lé each to as BU3 191 ha a - and dp (two) to form sation T-bonds (125, 'g ap) 8-bonds = 3, cone pair = 0 sum of these = 3+0 = 3 sp2 hybridisation of B in BC3, (o bond b

Valence shell 441 & Sefy . Electronic configuration of se= [Ar], 3do ust, up" Ground state of Se - Ny hlin O 4d Cuacant) Excted state of se - Tul Ilola il I D Conly up é unpaired as uf are there, so only 4 unpained é required- Sefy ny [urlty u so us és are non-bonded up: . Ye from f (both are from se, not bonded) - Cleach') to left as lone pair. here o-bonds = 4. lone pair = 1 1.45, 3-up, 1-4d of valence - Sum of both = 4+1=5 do spod hybridlùatien so sp²d hybridisation of se in sefy. electronic & pl5 configuration of P = (ne] 35 36 alence shell Ground state of P- 12.1 1111 3d (valeant) Excited state of p = A 100 All 35 Bp 3d All et unpaired as se require ses and donate . ses to form a bonds puls i NT n o 1-35, 3-3p, 1-3d used 3s 3p 3d so spåd hybridisation se from ces from all bonded es, no lone pair to T-bond = 5 ; lone pair = 0 Sum of both =5. so sp²d hybridisation of p in Pas. 35 38