LOYOLA COLLEGE (AUTONOMOUS), CHENNAI
... State any two postulates of quantum mechanics. Prove that the square of the angular momentum commutes with its components. What is meant by degeneracy of an energy level? What is an orthonormal basis? With an example explain simultaneous eigenfunctions. If A and B are two operators, then show that [ ...
... State any two postulates of quantum mechanics. Prove that the square of the angular momentum commutes with its components. What is meant by degeneracy of an energy level? What is an orthonormal basis? With an example explain simultaneous eigenfunctions. If A and B are two operators, then show that [ ...
PowerPoint 演示文稿
... chlorine:an isotope with mass number 35 occurs with an abundance of 75.4%;the other stable isotope with mass number A=37 has na abundance of 24.6%.The resulting relative atomic mass of the isotope mixture is Arel=35.457. There are elements with only one stable isotope,for example ; and others with t ...
... chlorine:an isotope with mass number 35 occurs with an abundance of 75.4%;the other stable isotope with mass number A=37 has na abundance of 24.6%.The resulting relative atomic mass of the isotope mixture is Arel=35.457. There are elements with only one stable isotope,for example ; and others with t ...
atom
... The electrons which have same l are said to belong to a subshell (次壳层). Corresponding l= 1, 2, 3, 4, 5, 6 With code letters s, p, d, e, f, g, to specify. ...
... The electrons which have same l are said to belong to a subshell (次壳层). Corresponding l= 1, 2, 3, 4, 5, 6 With code letters s, p, d, e, f, g, to specify. ...
energy levels
... – Tells you how far away the electron is from the nucleus – There are 1-7 energy levels, correlates with period numbers – Each level has same n number of sublevels – Maximum number of 2n2 electrons per level ...
... – Tells you how far away the electron is from the nucleus – There are 1-7 energy levels, correlates with period numbers – Each level has same n number of sublevels – Maximum number of 2n2 electrons per level ...
Modern Physics 342
... The Hydrogen Atom Wave Functions • The Schrödinger Equation in Spherical Coordinates The Schrödinger equation in three dimensions is ...
... The Hydrogen Atom Wave Functions • The Schrödinger Equation in Spherical Coordinates The Schrödinger equation in three dimensions is ...
4.4 The Bohr Atom
... Did you spot the example of the misleading Physicsspeak* on the previous slide? Evidently, from the Balmer formula and its extension to general integers m, n, these allowed non-radiating orbits, the stationary states, could be labeled 1, 2, 3, ... , n, ... and had energies -1, -1/4, -1/9, ..., -1/n ...
... Did you spot the example of the misleading Physicsspeak* on the previous slide? Evidently, from the Balmer formula and its extension to general integers m, n, these allowed non-radiating orbits, the stationary states, could be labeled 1, 2, 3, ... , n, ... and had energies -1, -1/4, -1/9, ..., -1/n ...
the principle quantum number
... • (Methods for denoting earrangement for an atom: orbital notation) ...
... • (Methods for denoting earrangement for an atom: orbital notation) ...
Electron Configurations
... • According to the Heisenberg Uncertainty Principle we can not know the exact position and motion of electrons with complete certainty. • We can only describe the probable locations of electrons. • We will describe the location of electrons when the atom is at its lowest energy . ...
... • According to the Heisenberg Uncertainty Principle we can not know the exact position and motion of electrons with complete certainty. • We can only describe the probable locations of electrons. • We will describe the location of electrons when the atom is at its lowest energy . ...
electron configuration
... model of the atom. • Schrödinger’s equation applied equally well to elements other than hydrogen. • The wave function predicts a threedimensional region around the nucleus called the atomic orbital. • Principal quantum number (n) indicates the relative size and energy of atomic ...
... model of the atom. • Schrödinger’s equation applied equally well to elements other than hydrogen. • The wave function predicts a threedimensional region around the nucleus called the atomic orbital. • Principal quantum number (n) indicates the relative size and energy of atomic ...
2 - Physics at Oregon State University
... • Found μ = (q/2m)L • Have such a term for orbital angular momentum L, “intrinsic spin” S, and for the total angular momentum (the QM sum of L and S) • Generalize: μ = g(q/2m)S – S is the “intrinsic angular momentum” – as if the electron spun on its axis, but NOT physical – g is the gyromagntic/gyro ...
... • Found μ = (q/2m)L • Have such a term for orbital angular momentum L, “intrinsic spin” S, and for the total angular momentum (the QM sum of L and S) • Generalize: μ = g(q/2m)S – S is the “intrinsic angular momentum” – as if the electron spun on its axis, but NOT physical – g is the gyromagntic/gyro ...
Models of the Hydrogen Atom
... What conclusions can you make about the structure of the hydrogen atom? Your conclusion should address as many of your observations as possible. ...
... What conclusions can you make about the structure of the hydrogen atom? Your conclusion should address as many of your observations as possible. ...
MiniQuiz 3
... One of the major factors in determining the energy of an electron is its electrostatic attraction to the positive nucleus. Shielding refers to the: a) the number of electrons in the outer shell. b) the electron’s angular momentum quantum number. c•) the presence of other electrons between the electr ...
... One of the major factors in determining the energy of an electron is its electrostatic attraction to the positive nucleus. Shielding refers to the: a) the number of electrons in the outer shell. b) the electron’s angular momentum quantum number. c•) the presence of other electrons between the electr ...
Final Exam 2004
... total angular momentum of the emitted photon is , i.e. J photon 1 . Assume that the quantum numbers J, L, and S of the atom do not change and only M J changes as the result of this process. How does the atom quantum number M J change? Express the frequency of the emitted photon via W. [Hint: u ...
... total angular momentum of the emitted photon is , i.e. J photon 1 . Assume that the quantum numbers J, L, and S of the atom do not change and only M J changes as the result of this process. How does the atom quantum number M J change? Express the frequency of the emitted photon via W. [Hint: u ...
Atomic Term Symbols and Energy Splitting
... Atomic Term Symbols and Energy Splitting 1. Atomic Term Symbols and the Sodium D-Line The sodium D-line is responsible for the familiar orange glow of many street lights. The origin of the glow is emission of photons in the visible region of the electromagnetic spectrum from excited sodium atoms. Th ...
... Atomic Term Symbols and Energy Splitting 1. Atomic Term Symbols and the Sodium D-Line The sodium D-line is responsible for the familiar orange glow of many street lights. The origin of the glow is emission of photons in the visible region of the electromagnetic spectrum from excited sodium atoms. Th ...
Exam on Matter through Bonding
... 10. The bonds in the compound MgSO4 can be described as (1) ionic, only (2) covalent, only (3) both ionic and covalent (4) neither ionic nor covalent 11. Which of these types of nuclear radiation has the greatest penetrating power? (1) alpha (3) neutron (2) beta (4) gamma 12. Alpha particles and bet ...
... 10. The bonds in the compound MgSO4 can be described as (1) ionic, only (2) covalent, only (3) both ionic and covalent (4) neither ionic nor covalent 11. Which of these types of nuclear radiation has the greatest penetrating power? (1) alpha (3) neutron (2) beta (4) gamma 12. Alpha particles and bet ...
Hydrogen atom
A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force. Atomic hydrogen constitutes about 75% of the elemental (baryonic) mass of the universe.In everyday life on Earth, isolated hydrogen atoms (usually called ""atomic hydrogen"" or, more precisely, ""monatomic hydrogen"") are extremely rare. Instead, hydrogen tends to combine with other atoms in compounds, or with itself to form ordinary (diatomic) hydrogen gas, H2. ""Atomic hydrogen"" and ""hydrogen atom"" in ordinary English use have overlapping, yet distinct, meanings. For example, a water molecule contains two hydrogen atoms, but does not contain atomic hydrogen (which would refer to isolated hydrogen atoms).