Hydrofluoric acid shows hydrogen bonding due to :
high electron affinity of fluorine
high bond dissociation energy of fluorine
high electronegativity of fluorine
none of the above
Assertion: The S-S-S bond angle in S8 molecule is 105°.
Reason : S8 has a V-shape.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
Assertion : Sodium formate has both the C-O bonds have same value 1.27Å.
Reason : Equal bond length is due to the phenomenon of resonance.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
Ionic compounds are formed most easily with :
low electron affinity , high ionisation energy
high electron affinity , low ionisation energy
low electron affinity , low ionisation energy
high electron affinity , high ionisation energy
The correct order of dipole moment is
CH4 <NF3 <NH3 <H2O
NF3 <CH4 <NH3 <H2O
NH3 <NF3 <CH4 <H2O
H2O <NH3 <NF3 <CH4
Assertion : SeCl4 does not have a tetrahedral structure.
Reason : Se in SeCl4 has two lone pairs.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Intermolecular hydrogen bonding is strongest in :
C2H5OH
HF
H2O
CH3COCH3
B.
HF
Strength of H · · · · · F > H · · · · · O