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Class 9th science chapter 4-structure of atom

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Class 9th science chapter 4 structure of atom notes
Total page- 6
Topic – different models of structure of atom,basics

Thomson model of atom

Rutherford’s experiment and model

Bohr postulate

Proton electron neutron

Distribution of electron in shell/orbits

Vmass number atomic number valency

Isobar isotopes

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