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Questions and Answers
Which theory describes the electronic structure of the hydrogen atom?
Which theory describes the electronic structure of the hydrogen atom?
What governs the behavior of electrons in an atom?
What governs the behavior of electrons in an atom?
Which concept explains the spatial distribution of electrons in an atom?
Which concept explains the spatial distribution of electrons in an atom?
Who is credited with applying the term 'atom' to the basic units of mass of the chemical elements?
Who is credited with applying the term 'atom' to the basic units of mass of the chemical elements?
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What does the term 'atom' mean in Greek?
What does the term 'atom' mean in Greek?
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Which ancient culture first proposed the idea of matter being composed of tiny indivisible particles?
Which ancient culture first proposed the idea of matter being composed of tiny indivisible particles?
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What did scientists realize about Dalton's so-called 'atoms' in the 20th century?
What did scientists realize about Dalton's so-called 'atoms' in the 20th century?
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What is the modern term for particles that are truly indivisible?
What is the modern term for particles that are truly indivisible?
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Study Notes
Electronic Structure of Hydrogen Atom
- The electronic structure of the hydrogen atom is described by quantum mechanics, specifically the Bohr model and later quantum mechanical models.
Behavior of Electrons in an Atom
- The behavior of electrons in an atom is governed by quantum mechanics, which employs principles such as wave-particle duality and uncertainty.
Spatial Distribution of Electrons
- The concept that explains the spatial distribution of electrons in an atom is known as electron cloud theory or atomic orbital theory.
Origin of the Term 'Atom'
- John Dalton is credited with applying the term 'atom' to the fundamental units of mass in chemical elements in the early 19th century.
Meaning of 'Atom' in Greek
- The term 'atom' derives from the Greek word “atomos,” meaning "indivisible."
Ancient Culture and Indivisible Particles
- The idea that matter is composed of tiny indivisible particles was first proposed by ancient Greek philosophers, particularly Democritus and Leucippus.
Evolution of Dalton's Atomic Theory
- In the 20th century, scientists discovered that Dalton's so-called 'atoms' could be further divided into subatomic particles, such as protons, neutrons, and electrons.
Modern Term for Indivisible Particles
- The modern term for particles that are truly indivisible is "fundamental particles" or "elementary particles," which include quarks and leptons.
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Description
Test your knowledge of atomic theory, atomic models, Bohr's theory of the hydrogen atom, introduction to quantum theory, quantum numbers, electronic structure of atoms, types of orbitals, and laws governing elections.
