Which one shows maximum hydrogen bonding?
H2O
H2Se
H2S
HF
In which one of the following molecules, the central atom said to adopt sp2- hybridisation?
Be F2
BF3
C2H2
The boiling point of p- nitrophenol is higher than that of O- nitrophenol because___________.
NO2 group at p- position behave in a different way from that at O- position.
Intramolecular hydrogen bonding exists in p- nitrophenol
There is intermolecular hydrogen bonding in p- nitrophenol.
P- nitrophenol has a higher molecular weight than O- nitrophenol.
Which of the following does not have a tetrahedral structure?
BH4-
BH3
NH4+
When the hybridisation state of carbon atom changes from sp3 and finally to sp, the angle between the hybridised orbitals.
Decreases gradually
Decrease considerably
Is not affected
Increases progressively
The dielectric constant of H2O is 80. The electrostatic force of attraction between Na+ and Cl- will be________
Reduced to 1/40 in water than in air.
Reduced to 1/80 in water than in air.
Will be increased to 80 in water than in air
Will remain unchanged
Mark the incorrect statement in the following.
The bond order in the species O2, O2+ and O2- decreases as O2+> O2>O2-
The bond energy in a diatomic molecule always increases when an electron is lost.
Electrons in antibonding molecule contribute to repulsion between two atoms.
With increase in bond order, bond length decreases and bond strength increases.
Equilateral shape has
sp - hybridization
sp2- hybridization
sp3- hybridization
dsp2- hybridization
Linus Pauling received the Nobel prize for his work on ____________.
Atomic structure
Photosynthesis
Chemical bonds
Thermodynamics
The charge on a cation M is +2 and on an anion A is -3. The compound formed by them has the formula :
NH3
