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The radical, CH(2) is aromatic because i...

The radical, `CH_(2)` is aromatic because it has

A

7 p-orbitals and 6 unpaired electrons

B

7 p-orbitals and 7 unpaired electrons

C

6 p-orbitals and 7 unpaired electrons

D

6 p-orbitals and 6 unpaired electron

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Reaction intermdiates are short lived species and are highly reactive. They are formed by heterolytic and homolytic bond fission. There are various types of reaction intermediates in which the most important are carbocation , carbanion and free radical. Carbocation is an organic species in which carbon have positive charge and six electrons in its outermost shell. The stability of carbocation can be increased by positive inductive effect, hyperconjugation and delocalisation. If alpha -atom with respect to carbocation has one or more lone pair of electron then lone pair of electron strongly stabilises the carbocation due to octet completion. Species in which carbon have negative charge is called carbanion. Carbanion carries three bond pairs and one lone pair. The stability of carbanion can be increased by negative inductive effect, negative mesomeric effect and delocalisation. Free radical is a species which have seven electrons in its outermost shell. The stability of free radical can be increased by hyperconjugation and delocalisation. The stability order of following free radicals is: C_(6)H_(5)underset(I)CH_(2)overset(*)CH_(2)" "CH_(3)underset(II)CH_(2)overset(*)CH_(2)" "underset(" "III)(C_(6)H_(5))overset(*)CH_(2)" "underset(IV)(CH_(3)^(*)

Smoking addiction is harmful because it produces polycycllic aromatic hydrocarbons which cause :

Ca^(2+) has a smaller ionic radius than K^(+) because it has ................ .

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AAKASH INSTITUTE ENGLISH-ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES AND TECHNIQUES -Assignment(SECTION C)
  1. In the Kjeldahl's method for estimation of nitrogen present in a soil ...

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  2. The structure of isobutyl group in an organic compound is

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  3. The radical, CH(2) is aromatic because it has

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  4. The order of stability of the following tautomeric compounds

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  5. Structure of the compound whose IUPAC name is 3-ethyl-2-hydroxy-4-meth...

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  6. Some meta-directing substituents in aromatic substitution are given wh...

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  7. Which of the following compounds will not undergo Friedel Craft's reac...

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  8. Which nomenclature is not according to IUPAC system?

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  9. Among the following compounds the one that is most reactive towards el...

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  10. In Duma's method for estimation of nitrogen 0.35 g of an organic compo...

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  11. Considering the state of hybridization of carbon atoms, find out the m...

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  12. The Lassaigne's extract is boiled with conc. HNO(3) while testing for ...

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  13. The correct IUPAC name of the compound is

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  14. Which one of the following is most reactive towards electrophillic rea...

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  15. The IUPAC name of the following compound is

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  16. Which of the following species is not electrophilic in nature ?

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  17. The IUPAC name of the compound CH(3)CH=CHC-=CH is -

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  18. The state of hybridization of C(2) , C(3), C(5) and C(6) of the] CH, C...

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  19. The IUPAC name of the compound having the formula CH-=C-CH=CH(2) is

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  20. Which of the following compounds will exhibit cis-trans (geometrical )...

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