d2sp3 hybridisation of the atomic orbitals gives
square planar structure
triangular structure
tetrahedral structure
octahedral structure
A group of atoms can function as a ligand only when
It is a small molecule
It has an unshared electron pair
Its a negatively charged ion
It is a positively charge ion
The process is spontaneous at the given temperature, if
ΔH is +ve and ΔS is -ve
ΔH is -ve and ΔS is +ve
ΔH is +ve and ΔS is +ve
ΔH is +ve and ΔS is equal to zero.
Mesomeric effect involves
delocalisation of π- electron
delocalisation of σ- electron
partial displacement of electrons
delocalisation of π and σ- electron
Alkali metals have negative reduction potential and hence they behave as
oxidising agents
Lewis bases
reducing agents
electrolytes
Cycloalkane formed when 1,4-dibromopentaneis heated with sodium is
methyl cyclobutane
cyclopentane
cyclobutane
methyl cyclopentane
A.
methyl cyclobutane
When α,ω-dihalogen derivatives of the alkanes (say 1,4-dbromopentane) are treated with sodium or zinc, the corresponding cycloalkane is formed. The reaction undergoes free radical mechanism.
On the other hand α,ω-dihalogen derivatives of the alkanesn which the two halogen atoms are further apart than the 1,6-positions, do not form ring compounds but undergo the Wurtz reaction.