#Structure of an atom pdf#

The mass of an electron was determined to be 9.1094 x 10 -31kg.

The mass on an electron was determined by combining the results of Thomson’s experiment and Millikan’s oil drop experiment.

The value of the charge on an electron is -1.6 x 10 -19C.

Charge on an electron was determined by R A Millikan by using an oil drop experiment.

The charge to mass ratio of an electron as 1.758820 x 10 11 C kg -1

Charge to mass ratio of an electron was determined by Thomson.

The characteristics of the cathode rays do not depend upon the material of the electrodes and the nature of the gas present in the cathode ray tube. In presence of electrical or magnetic field, behaviour of cathode rays is similar to that shown by electronsĮ. In absence of electrical or magnetic field cathode rays travel in straight linesĭ. Cathode rays themselves are not visible but their behavior can be observed with help of fluorescent or phosphorescent materials.Ĭ. Cathode rays consist of negatively charged electrons.ī. When a perforatedanode was taken, the cathode rays struck the other end of the glass tube atthe fluorescent coating and a bright spot on the coating was developedĪ. At very low pressure and high voltage, current starts flowing through a stream of particles moving in the tube from cathode to anode.

Nucleus was discovered by Rutherford in 1911.Ĭathode ray discharge tube experiment: A cathode ray discharge tube made of glass is taken with two electrodes.

Electrons were discovered using cathode ray discharge tube experiment.

Atom is made of electron, proton and neutrons.

Atom is the smallest indivisible particle of the matter.These revision notes cover all important topics given in this chapter. Our best teachers for Grade 11 have prepared these to help you get better marks in upcoming examinations. Students of Class 11 Chemistry will be able to revise the entire chapter and also learn all important concepts based on the topic wise notes given below. Revision Notes Chapter 2 Structure of Atom We have provided chapter wise Notes for Class 11 Chemistry as per the latest examination pattern. Students will be able to understand the entire chapter in your class 11th Chemistry book.

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#Structure of an atom pdf#

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