Question

1. True or False: Hydrogen bonding is a type of dipole-ion interaction 2.True or False: A noble gas can exhibit London Foces. 3. is the resistance to flow, reflecting how easily molecules move past one another Select one: a. Vapor Pressure b. Cohesion c. Surface Tension d. Viscosity

Answer 1

1.

When Hydrogen is bonded to a highly electronegative atom like flourine , oxygen or nitrogen then it forms a weak bond with the neighbouring atom known as Hydrogen bonding. In Hydrogen bonding the polar end of one molecule attracts the polar end of other Molecule. Hence Hydrogen bonding is a type of dipole-dipole forces.

Answer -- False

2. Answer --True.

The forces which mediate the interaction between the molecules are known as intermolecular forces. Intermolecular forces are of 3 types :- 1. Hydrogen bonding -- When hydrogen is bonded to a highly elecrtonegative atom like Flourine , oxygen or nitrogen then it forms a weak bond known as hydrogen bond. Dipole dipole forces -- In polar molecules negative end of one molecule attracts the positive end of the other molecule. It is called Dipole forces. It is present only in polar molecules. Dispersion forces -- It arises when electrons in an atom occupies positions that results in temporary Dipoles. It is present in nonpolar molecule.

3. Viscosity is defined as the resistance to flow of a liquid.

Answer -- Viscosity