Atomic Theory and Structure Quiz

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.