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Organic Chemistry

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Joined:	18 Jun 2007
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29 Jun 2007 08:49:52 IST

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hybridisation

None

can anyone tell me why there is a need of central atom in hybridisation?

for e.g. in a cl molecule if we hybridise both cl atoms then there will be a beter overlap and hence the molecule will be more stable. but that is not the case

plz can anyone help me in this topic

2)in n molecule there are three triple bonds then why not p forms triple bonds and exists as p2 why it is more stable in p4.same wid oxygen and sulphur

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Khinar Thukral

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Joined: 8 Feb 2007

Posts: 309

30 Jun 2007 13:04:11 IST

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Hey what questions are U asking.We use the concept of orbital overlap that is hybridization to know the atomic symmetry AROUND THE CENTRAL ATOM.Ok tell me if U are asked to tell the area of a rectangle of sides 3cm and 2cm .Then what will U say !!!!!!!!!!That why U have given the sides I can find out the area by measuring the sides.

arun-rashi

Forum Expert

Joined: 19 Oct 2006

Posts: 1057

30 Jun 2007 13:05:02 IST

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Hybridization is a hypotetical concept which we r using to explain experimental facts so we don't require central atom but in order to explain covalency or bond parameters we say that central atom is hybridised for e.g CH₄ ,Here C forms 4 bonds but its cofiguration is 1s² 2s² 2p²so it shud form only 2 bonds but it actually forms 4 bonds thus in order to explain covalency we talk about promotion of electron to higher orbitals during hybridisation giving conf as1s²2s² 2p_x¹ 2p_y¹ 2p_z¹ i.e covalency of 4 2.In CH4 C forms bonds with H {s orbitals} using its p orbital[3] &s orbital[1] so 3 bonds shud be same in bond parameters like bond length or bond energy & 1 shud be diff but actually all bonds were same in all respects thus this was explained by hybridization b/w sp3 orbitals to form identical orbitals having identical energy &shape called as sp3 orbitals making all parameters of all the 4 bonds same

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