ICSE Class 9 Chemistry Atomic Structure and Chemical Bonding
Model of An Atom
J.J. Thomson proposed that electrons are embedded in a positive sphere.
The mass of positively charged proton and neutral neutron is one unit each.
The mass of negatively charged electron is about 1/1840 times the mass of a proton.
ICSE Class 9: Textbook Solutions, Videos, Sample Papers & More
ICSE Class 9: MIQ's, Weekly Test, Video Assessment & More
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