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HYBRIDIZATION AND GEOMETRY SIMPLIFIED

Blazing goIITian

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19 Dec 2009 11:21:56 IST
Posts: 359
19 Dec 2009 11:21:56 IST
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HYBRIDIZATION AND GEOMETRY SIMPLIFIED
Engineering Entrance , JEE Main , JEE Main & Advanced , Mathematics , Analytical Geometry

PS:THIS FORMULA WILL ALWAYS GIVE YOU THE CORRECT ANSWER
Just get through wid all this u'll find inorganic petty easy....

SHORTEST FORMULAE FOR HYBRIDIZATION:

No of valence electrons + No. of atoms attached to central atom
2

CONDITIONS:
1. Don't count the multiple bonded attached atoms.
2. Don't coun't odd or unpaired electrons.

after putting the values in the formula if ya get:

2 then compound is sp hybridized
3 then compound is sp2 hybridized
4 then compound is sp3/dsp2 hybridized
5 then compound is sp3d/dsp3 hybridized
6 then compound is sp3d2/d2sp3 hybridized

TO DIFFERENTIATE b/w sp3 and dsp2 hybridization and so on.

1. Easiest way is to check whether d-orbital present or not.

2. If the compound undergoes reaction with strong ligand than dsp2, dsp3,d2sp3 hybridization occurs.

3.If the compound undergoes reaction with weak ligand than sp3, sp3d, sp3d2 hybridization occurs.

TO IDENTIFY STRONG LIGAND AND WEAK LIGAND:

ALL NITROGEN CONTAINING except nitrate ion are strong ligands.
CO is exceptionally strong ligand...

ALL STRONG LIGANDS CAUSE PAIRING OF UNPAIRED ELECTRON IN D-ORBITAL.

GEOMETRIES:
REQUIRED (R): the total no. of atoms which are necessary for perfect geometry of that hybridization or number of hybrid orbitals.

AVAILABLE(A): Atoms attached.

R-A=no. lone pair
1.sp hybridization:
R=2, A=2
R-A=0
linear geometry, 0 dipole moment.

R=2, A=1
R-A=1 lone pair

so dipole moment is not 0.

2.sp2 hybridization:

a. R=3
-A=3

0 = no. of lone pairs.
Geometry: trigonal planar and dipole moment =0

b. R=3
A=2

lone pair = 1
Geometry: V shape/angular

c. R=3
A=1

lone pair = 2
Geometry: Linear

3. sp3

a. R=4
A=4

lone pair=0
Geometry: Tetrahedral

b. R=4
A=3

lone pair = 1

Geometry: pyramidal

c. R=4
A=2

lone pair = 2

Geometry: V-shape

d. R=4
A=1

lone pair = 3

Geometry: Linear

4.sp3d

a. R=5
A=5

lone pair = 0

Geometry: Trigonal Bipyramidal

b. R=5
A=4

lone pair = 1

Geometry: see-saw

c. R=5
A=3

lone pair = 2

Geometry: T-shape

d. R=5
A=2

lone pair = 3

Geometry: Linear

LONE PAIR CAUSE MAXIMUM repulsion so they will be placed at equitorial postion (larger bond angle)

5. sp3d2:

a. R=6
A=6

lone pair = 0

Geometry: square bipyramidal

b. R=6
A=5

lone pair = 1

Geometry:square pyramidal

c. R=6
A=4

lone pair = 2

Geometry : square planar.

PRACTICE PROBLEMS:

1. BeCl2 = 2+2 = 2 =sp Linear
2

2. CO2 = 4/2 =2 =sp Linear

3.XeOF2 = 8/2 + 2/2 = sp3d T-shape

4. XeF6 = 8/2 + 6/2 = Sp3d3 Distorted octahedral or caped octahedrl
A WINNER NEVER QUITS..........AND A QUITTER NEVER WINS!!!!!!!!!

source::::::::::targetiit.com

Blazing goIITian

Joined: 19 Jul 2009 19:15:57 IST
Posts: 359
19 Dec 2009 14:48:54 IST
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Blazing goIITian

Joined: 6 Jun 2009 14:14:40 IST
Posts: 366
19 Dec 2009 16:13:55 IST
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nice one yar.........

Blazing goIITian

Joined: 19 Jul 2009 19:15:57 IST
Posts: 359
19 Dec 2009 16:56:53 IST
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thnxx bhaiiya

Blazing goIITian

Joined: 25 Jul 2009 21:09:59 IST
Posts: 615
19 Dec 2009 19:01:50 IST
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good one hatts off

Hot goIITian

Joined: 25 Jun 2008 12:56:36 IST
Posts: 174
19 Dec 2009 19:04:16 IST
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good job

Blazing goIITian

Joined: 9 May 2009 09:33:23 IST
Posts: 831
19 Dec 2009 19:24:25 IST
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really appreciable brother .. continue.... :-)

Scorching goIITian

Joined: 15 Sep 2009 11:39:56 IST
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19 Dec 2009 19:32:35 IST
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gr88888 sanchit......................

Blazing goIITian

Joined: 19 Jul 2009 19:15:57 IST
Posts: 359
20 Dec 2009 14:00:12 IST
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thnxx a lott

Blazing goIITian

Joined: 1 Jun 2008 20:37:23 IST
Posts: 1625
20 Dec 2009 14:03:52 IST
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nice work !!! appreciable !!!

Cool goIITian

Joined: 12 Dec 2009 14:25:45 IST
Posts: 42
20 Dec 2009 20:50:29 IST
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realy thanks for that

Blazing goIITian

Joined: 4 Apr 2009 11:17:18 IST
Posts: 2068
20 Dec 2009 21:32:53 IST
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Good work ! keep it up !

Blazing goIITian

Joined: 19 Jul 2009 19:15:57 IST
Posts: 359
22 Dec 2009 13:39:07 IST
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thnxxxxxxx

New kid on the Block

Joined: 15 Nov 2009 17:36:07 IST
Posts: 12
22 Dec 2009 15:37:10 IST
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thnkxxx yaar,u have solved one of my biggest prob

Blazing goIITian

Joined: 19 Jul 2009 19:15:57 IST
Posts: 359
22 Dec 2009 21:12:26 IST
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u r most welcomee

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