Podcast
Questions and Answers
What is the applicability of the de-Broglie equation?
What is the applicability of the de-Broglie equation?
- Only to electrons
- Only to neutrons
- To all material objects in motion (correct)
- Only to protons
Which of the following electronic configurations is not possible?
Which of the following electronic configurations is not possible?
- [Ar]3d10, 4s2, 4p2
- 1s2, 2s2
- 1s2, 2s2, 2p2, 3s1 (correct)
- 1s2, 2s2, 2p6
What is the maximum number of electrons that can be accommodated in a g-subshell?
What is the maximum number of electrons that can be accommodated in a g-subshell?
- 18 (correct)
- 12
- 14
- 20
What is the correct ground state electronic configuration of chromium?
What is the correct ground state electronic configuration of chromium?
What is the ionisation energy of He+?
What is the ionisation energy of He+?
How many spectral lines can be emitted by a hydrogen atom excited by 8.4 eV of energy?
How many spectral lines can be emitted by a hydrogen atom excited by 8.4 eV of energy?
What does the value of ψ (psi) the wave function depend on?
What does the value of ψ (psi) the wave function depend on?
What is the orbital angular momentum of an electron in a d-orbital?
What is the orbital angular momentum of an electron in a d-orbital?
What is the nature of the space between the proton and electron in a hydrogen atom?
What is the nature of the space between the proton and electron in a hydrogen atom?
What is the significance of the de-Broglie equation in quantum mechanics?
What is the significance of the de-Broglie equation in quantum mechanics?
Flashcards are hidden until you start studying
Study Notes
Atomic Structure and Spectra
- The ground state of a nitrogen atom has 3 unpaired electrons, associated with Hund's rule of maximum multiplicity.
- The energy of an electron in the second Bohr's orbit in a hydrogen atom is -3.41 eV, and in a He+ ion is -13.62 eV.
- When an electron is brought from an infinite distance to the nucleus of an atom, the energy of the electron-nucleus system decreases to a greater negative value.
- The Aufbau principle states that electrons occupy the lowest available energy levels.
- The Pauli's exclusion principle states that no two electrons in an atom can have the same set of quantum numbers.
- The Heisenberg uncertainty principle states that it is impossible to know both the position and momentum of an electron with infinite precision.
- The de-Broglie wavelength of a particle is given by λ = h/mv, where h is the Planck constant, m is the mass of the particle, and v is its velocity.
- The energy of an electron in a hydrogen atom is given by E = -13.6 eV / n^2, where n is the principal quantum number.
- The Lyman series, Balmer series, and Paschen series are sets of spectral lines in the hydrogen atom spectrum, corresponding to transitions from higher energy levels to lower energy levels.
- The angular momentum of an electron in an orbital is given by L = √(l(l+1)) ℎ / 2π, where l is the orbital angular momentum quantum number.
- The probability of finding an electron in a px orbital is not zero in the yz plane.
Electron Configurations
- The electronic configuration of an element is a description of the arrangement of electrons in its atomic orbitals.
- The ground state electronic configuration of an element is the lowest energy arrangement of electrons in its atomic orbitals.
- The electronic configuration of an element can be written in terms of its atomic orbitals, such as 1s, 2s, 2p, 3s, 3p, etc.
- The electronic configuration of an element can be used to predict its chemical properties and behavior.
Atomic Numbers and Mass Numbers
- The atomic number of an element is the number of protons in its atomic nucleus.
- The mass number of an element is the sum of the number of protons and neutrons in its atomic nucleus.
- The atomic number of an element determines its position in the periodic table.
- The mass number of an element determines its mass.
Quantum Mechanics
- The wave function ψ (psi) represents the probability of finding an electron in a particular location.
- The wave function ψ (psi) is a mathematical function that describes the behavior of an electron in a quantum system.
- The Schrödinger equation is a mathematical equation that describes the behavior of an electron in a quantum system.
- The Aufbau principle and the Pauli's exclusion principle are used to determine the electronic configuration of an element.
Spectroscopy
- Spectroscopy is the study of the interaction between matter and electromagnetic radiation.
- The energy of an electron in a hydrogen atom can be calculated using the formula E = hf, where h is the Planck constant and f is the frequency of the radiation.
- The Lyman series, Balmer series, and Paschen series are sets of spectral lines in the hydrogen atom spectrum, corresponding to transitions from higher energy levels to lower energy levels.
- The energy of an electron in a hydrogen atom is given by E = -13.6 eV / n^2, where n is the principal quantum number.
Nuclear Reactions
- Nuclear reactions involve the interaction of atomic nuclei with other particles, such as neutrons or protons.
- The discovery of neutrons led to the development of nuclear reactions and the understanding of the nucleus.
- The reaction between beryllium and alpha particles led to the discovery of neutrons.
Electron Emission
- The energy of an electron emitted from a metal surface is given by the formula E = hf, where h is the Planck constant and f is the frequency of the radiation.
- The kinetic energy of an electron emitted from a metal surface is given by the formula K = hf - Φ, where Φ is the work function of the metal.
- The work function of a metal is the minimum energy required to remove an electron from the metal surface.
- The photoelectric effect is the phenomenon of electron emission from a metal surface when it is exposed to electromagnetic radiation.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.