Structure of Atom Class 11 Chemistry Chapter 2 One Shot | New NCERT CBSE
LearnoHub - Class 11, 12・2 minutes read
The video explains the structure of an atom, detailing the nucleus with protons and neutrons and the orbiting electrons. It also covers the historical development of atomic models by scientists and the limitations of the Bohr model, leading to the quantum mechanical model of the atom.
Insights
- Atoms consist of protons, neutrons, and electrons, with protons and neutrons in the nucleus and electrons orbiting around it.
- The historical development of atomic models involved scientists like John Dalton, Thomson, Rutherford, Bohr, and the quantum mechanical model.
- Subatomic particles, including electrons, protons, and neutrons, were discovered through experiments like the cathode ray discharge tube and the Oil Drop Experiment.
- Rutherford's model of the atom, emphasizing a positively charged nucleus surrounded by electrons, lacked explanations for atom stability and electronic structure.
- The dual nature of electromagnetic radiation as both particles (photons) and waves is evident in phenomena like the photoelectric effect and atomic spectra.
- The Bohr Model explained the hydrogen spectrum and circular electron orbits but was limited to species with one electron, leading to the quantum mechanical model's development.
- The quantum mechanical model describes electron behavior in three-dimensional space, with atomic orbitals defined by wave functions and quantum numbers determining energy levels and orbital characteristics.
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Recent questions
What are atoms made of?
Atoms are composed of protons, neutrons, and electrons.
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