ICSE Class 9 Chemistry Atomic Structure and Chemical Bonding
Model of An Atom
Credit for the discovery of electron goes to J.J.Thomson, proton to E.Goldstein and neutrons to J. Chadwick.
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.Parameters of An Atom
Parameters of an atomDistribution of Electrons in Orbits
Distribution of Electrons in OrbitsChemical Activity of Atoms
Chemical Activity of AtomsRedox Reactions
Redox reactionsElectrovalent Bonding
Electrovalent bondingCovalent Bonding
Covalent bonding
