CBSE
The correct statement with regard to and is
both H and H are equally stable
both H and H do not exist
H is more stable than H
H is more stable than H
The number of electrons, neutrons and protons in a species are equal to 10, 8 and 8 respectively. The proper symbol of the species is
Which of the following has sp2-hybridisation?
C2H6
C2H4
BeCl2
C2H2
Among LiCl, BeCl2, BCl3 and CCl4 the covalent bond character follows the order
LiCl < BeCl2 < BCl3 < CCl4
BCl3 < CCl4 < BeCl2 < LiCl
BeCl2 < LiCl < CCl4 < BCl3
CCl4 < BCl3 < BeCl2 < LiCl
Which one of the following complexes is outer orbital complex?
[Co(NH3)6]3+
[Mn(CN)6]4+
[Fe(CN)6]4-
[Ni(NH3)6]2+
The type of hybridisation in SF6, molecule is
sp3d
dsp3
sp3d
d2sp3
The expression for the solubility product of Ag2CO3 will be
Ksp = s2
Ksp = 4s3
Ksp = 27s4
Ksp = s
An sp3-hybrid orbital contains
Which one ofthe following statements about C2 molecule is wrong?
The bond order of C2 is 2.
In vapour phase, C2 molecule is diamagnetic.
Double bond in C2 molecule consists of both - bonds because of the presence of 4 in two - molecular orbitals.
double bond in C2 molecule consists of one - bond and on -bond.
Hybridisation states of C in CH and C are
sp2, sp3
sp3, sp2
sp, sp2
sp2, sp