The charge on a cation M is +2 and on an anion A is -3. The compound formed by them has the formula :
H2O
NH3
HF
H2S
Which one shows maximum hydrogen bonding?
H2Se
The weakest among the following types of bond is _________.
Ionic
Covalent
Metallic
H- bond
Among the following which compound will show the highest lattice energy?
KF
NaF
CsF
RbF
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.
The angle between the overlapping of one s- orbtial and one p- orbital is
180o
120o
109o 28'
120o 60'
Which of the following molecule does not have a linear arrangement of atoms?
C2 H2
HCN
CO2
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
Which of the following does not apply to metallic bond?
Overlapping valence orbitals
Mobile valence electrons
Delocalised electrons
Highly directed bonds
