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Chapter - 5 States of Matter

Intermolecular Force – London Dispersion Forces Examples

By Dr. Vikas JasrotiaSeptember 14, 2021

London Dispersion Forces Examples London Dispersion Forces Examples Intermolecular forces are the forces of attraction and repulsion between interacting particles…

Browsing: London Dispersion Force

Intermolecular Force – London Dispersion Forces Examples

Atoms and Molecules Class 9 Questions (MCQs)

Question 2.12: Electrons are emitted with zero velocity from a metal surface when it is exposed to radiation of wavelength 6800 Å. Calculate the threshold frequency (ν0) and work function (W0) of the metal.

Question 2.11: A 25-watt bulb emits monochromatic yellow light of wavelength of 0.57µm. Calculate the rate of emission of quanta per second.

Question 2.10: Electromagnetic radiation of wavelength 242 nm is just sufficient to ionize the sodium atom. Calculate the ionization energy of sodium in kJ mol–1.

Atoms and Molecules Class 9 Questions (MCQs)

Question 2.12: Electrons are emitted with zero velocity from a metal surface when it is exposed to radiation of wavelength 6800 Å. Calculate the threshold frequency (ν0) and work function (W0) of the metal.

Question 2.11: A 25-watt bulb emits monochromatic yellow light of wavelength of 0.57µm. Calculate the rate of emission of quanta per second.