Chapter 23: Atomic Models Flashcards
What is an atomic model?
“An atomic model is a theoretical representation of the structure of atoms
What is the Bohr model of the atom?
“The Bohr model describes an atom as a nucleus surrounded by electrons in circular orbits with quantized energy levels. Electrons can absorb or emit energy when transitioning between these levels.”
What are energy levels in an atom?
“Energy levels are discrete orbits or shells around the nucleus where electrons reside. Each level corresponds to a specific energy
What is the idea of quantized energy?
“Quantized energy means that energy is only allowed in specific
What is the emission spectrum of hydrogen?
“The emission spectrum of hydrogen consists of discrete lines of light emitted when electrons transition between energy levels in the atom
What is the Rydberg formula?
“The Rydberg formula describes the wavelengths of the spectral lines of hydrogen
What is the significance of the Balmer series?
“The Balmer series refers to the visible lines in the hydrogen spectrum that are produced when an electron transitions to the second energy level (n = 2) from higher levels.”
What is the significance of the Lyman series?
“The Lyman series refers to the ultraviolet lines in the hydrogen spectrum that occur when an electron transitions to the first energy level (n = 1).”
What is the concept of electron transitions?
“Electron transitions refer to the process in which an electron moves between discrete energy levels in an atom
What is the concept of photon absorption?
“Photon absorption occurs when an electron absorbs a photon and moves to a higher energy level
What is the concept of photon emission?
“Photon emission occurs when an electron moves to a lower energy level and releases a photon of energy equal to the difference between the two levels.”
What is the wave function in the quantum model?
“The wave function in the quantum model describes the probability distribution of an electron’s position in an atom. Its square gives the probability of finding the electron in a particular region.”
What is the concept of atomic orbitals?
“Atomic orbitals are regions of space around the nucleus where there is a high probability of finding an electron. They are defined by quantum numbers and have distinct shapes such as s
What is the Heisenberg uncertainty principle?
“The Heisenberg uncertainty principle states that it is impossible to simultaneously measure both the position and momentum of an electron with absolute precision.”
What is the Schrödinger equation?
“The Schrödinger equation is a fundamental equation in quantum mechanics that describes how the quantum state of a system evolves over time. It helps in determining the probability distribution of particles like electrons.”
What are quantum numbers?
“Quantum numbers describe the properties of orbitals and the electrons within them. The four quantum numbers are: principal (n)
What is the Pauli exclusion principle?
“The Pauli exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers.”
What is the concept of electron spin?
“Electron spin is a fundamental property of electrons that describes their intrinsic angular momentum. Electrons can have spin values of +1/2 or -1/2.”
What is the concept of electron configurations?
“Electron configurations describe how electrons are distributed in an atom’s orbitals
