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.
Which of the following compounds is covalent ?
H2
CaO
KCl
Na2S
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?
H2S
C2 H2
HCN
CO2
The weakest among the following types of bond is _________.
Ionic
Covalent
Metallic
H- bond
In which one of the following molecules, the central atom said to adopt sp2- hybridisation?
Be F2
BF3
C2H2
Which one shows maximum hydrogen bonding?
H2O
H2Se
HF
Among the following, the pair in which the two species are not isostructural, is
Si F4 and SF4
IO3- and Xe O3
BH4- and NH4+
PFG- and SF6
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 charge on a cation M is +2 and on an anion A is -3. The compound formed by them has the formula :
NH3
