Recent questions tagged molecular-orbital-theory

pi bond is formed,

asked Apr 7, 2014 by meena.p

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p- bonding occurs in each of the following except

asked Apr 4, 2014 by meena.p

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The enolic form of acetone contains

asked Apr 4, 2014 by meena.p

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The rate of a gaseous reaction is given by the expression $k[A][B]$. If the volume of the reaction vessel is suddenly reduced to $ \large\frac{1}{4}$ th of the initial volume , the reaction rate relating to original rate will be

asked Apr 4, 2014 by meena.p

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Diazonium salt decomposes as $ C_6H_5N^{+}_2CL^{-} \longrightarrow C_6H_5Cl+N_2$

asked Apr 4, 2014 by meena.p

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$N_2$ and $O_2$ are converted into monoanions $N_2^{-}$ and $O_2^{-}$ respectively which of the following statem is wrong ?

asked Apr 4, 2014 by meena.p

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Bond order of $N-O$ bonds in nitrate ions is :

asked Apr 4, 2014 by meena.p

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According to molecular orbitals theory which of the following statement about the magnetic character and bond order is correct regarding $O_2^{+}$?

asked Apr 4, 2014 by meena.p

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The rate law of a reaction $A+B \to $ product is rate $=K [A]^n[B]^m$. On doubling the concentration of A and halving the concentration of B. Thr ratio of new rate to the earlier rate of reaction will be :

asked Apr 3, 2014 by meena.p

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Units of rate constant of first and zero order reaction in terms of molarity M are respectively :

asked Apr 3, 2014 by meena.p

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$t \large\frac{1}{4}$ can be taken as the time taken for concentration of reactant to drop to $\large\frac{3}{4}$ of its initial value. If the rate constant for a first order reaction is $K,$ then $t \large\frac{1}{4}$ can be written as

asked Apr 3, 2014 by meena.p

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The rate of a reaction gets doubled when the temperature changes from $7^{\circ}C$ to $17^{\circ}$ . By what factor will it change for the temperature change from $17^{\circ}C$ to $27^{\circ}C$

asked Apr 3, 2014 by meena.p

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Hybridisation is defined as the phenomenon of mixing of orbitals of nearly the same energy so as to redistribute their energies and to give rise to new orbitals of equivalent energy. It is the valence shell atomic which get hybridised one of the electrons from an orbital in the ground state electronic configuration of the atom gets promoted to the next available orbital of higher energy resulting in an excited state electronic configuration with the appropriate number of half filled orbitals. The orbitale in the excited state undergo hybridisation giving hybrid orbilats of equivalent energy. Hybrid orbitals generally from either bonds or contain lone pair of electrons, they do not form $\pi$ bonds. Depending on the type of orbitals used the hybridisation may be categorized as $SP$(linear), $SP^2$ (trigonal planar ), $SP^3$(tetrahedral), $SP^3d$(trigonal bipyramidal), $SP^3d^2$(Octahedral), $SP^3d^3$ (Pentagonal bipyramid ). Which one of the following species is diamagnetic ?

asked Apr 3, 2014 by meena.p

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In which of the following the hybrid orbitals of the central atom have the same s-characters ? $(i)\;CH_4 \qquad (ii)\; Ni(CO) \qquad (iii)\;SF_4 \qquad (iv) [Ni(CN)_4]^{2-} $

asked Apr 2, 2014 by meena.p

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$N_2$ forms $Ncl_3$ whereas P can form both $Pcl_3$ and $PCl_5$ why ?

asked Apr 2, 2014 by meena.p

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In III A group ,Tl (Thalium) shows stable +1 oxidation state, while boron shows stable +3 oxidation state. It is due to

asked Apr 2, 2014 by meena.p

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Which of the species is diamagnetic ?

asked Apr 2, 2014 by meena.p

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The cyanide ion, $CN^{-}$ and $N_2$ are isoelectronic . But in contrast to $CN^{-},N_2$ is chemically inert, because of

asked Apr 1, 2014 by meena.p

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During the formation of a molecular orbital from atomic orbitals , the electron density is

asked Apr 1, 2014 by meena.p

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The molecular shapes of $SF_4,CF_4$ and $XeF_4$ are

asked Mar 26, 2014 by sreemathi.v

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Most efficient overlapping is

asked Mar 26, 2014 by sreemathi.v

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The bond length in the species $O_2,O_2^+$ and $O_2^-$ are in the order

asked Mar 26, 2014 by sreemathi.v

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The relationship between the dissociation energy of $N_2$ and $N_2^+$ is

asked Mar 26, 2014 by sreemathi.v

1 answer