Quantum Numbers
Quantum Numbers Quantum numbers are values that describe electrons in atoms. They provide details about an electron’s location, energy, orientation, […]
chemistry, Exams & Career
chemistry
chemistry, Exams & Career
Quantum Mechanical Model of the Atom
Quantum Mechanical Model of the Atom The Quantum Mechanical Model is the most advanced and accurate model of the atom.
chemistry, Education & Study, Exams & Career
Isotopes and Isobars
Isotopes and Isobars In atomic theory, the concepts of isotopes and isobars are essential to understanding variations in atomic structures
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Atomic Structure
Introduction to Atomic Structure The atomic structure is the foundation of all matter. Atoms are the smallest units that retain
chemistry, Education & Study
Electronic Configuration
What is Electronic Configuration? Electronic configuration refers to the arrangement of electrons in the orbitals of an atom. It determines
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Dual Nature of Matter
Dual Nature of Matter Author: CHEMASH • Last reviewed: Sep 14, 2025 Dual Nature of Matter Introduction The Dual Nature
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Discovery of Electron Proton and Neutron
Discovery of Electron, Proton, and Neutron 1. Discovery of Electron (J.J. Thomson, 1897) The electron was discovered by J.J. Thomson
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Bohr’s Model of the Atom
Bohr’s Model of the Atom Bohr’s Model of the Atom Illustration of Bohr’s atomic model showing quantized electron orbits around
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Atomic Number and Mass Number
Atomic Number and Mass Number Atoms are identified by two key numbers: the atomic number and the mass number. These
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Atomic Models
Atomic Models Understanding the structure of an atom has been a key pursuit in chemistry and physics. Over time, scientists