Quantum Mechanics
... The number n is called principal quantum number. So the energy of the electron is quantized and this result is the consequence of Schrödinger equation. Although the energies of the hydrogen atom states can be described by the single quantum number n, the wave functions describing these states requir ...
... The number n is called principal quantum number. So the energy of the electron is quantized and this result is the consequence of Schrödinger equation. Although the energies of the hydrogen atom states can be described by the single quantum number n, the wave functions describing these states requir ...
Recitation on atomic structure Solution
... which immediately implies that if the potential energy is negative, the total energy will also be negative, which is exactly the case in hydrogen atom. Negative energies correspond to electrons bound to the nucleus, while positive energies imply that the electron is free from the attractive pull of ...
... which immediately implies that if the potential energy is negative, the total energy will also be negative, which is exactly the case in hydrogen atom. Negative energies correspond to electrons bound to the nucleus, while positive energies imply that the electron is free from the attractive pull of ...
Q1. This question is about the structure of atoms. (a) Choose words
... The chemical formula for hydrogen peroxide is H2O2. Calculate, to the nearest whole number, the percentage, by mass, of hydrogen in hydrogen peroxide. Show clearly how you work out your answer. ...
... The chemical formula for hydrogen peroxide is H2O2. Calculate, to the nearest whole number, the percentage, by mass, of hydrogen in hydrogen peroxide. Show clearly how you work out your answer. ...
Chap. 7 - Quantum Chemistry
... orbiting a nucleus would lose energy & eventually collapse into the nucleus. In Bohr’s model, an electron can travel around a nucleus without radiating energy. Furthermore, an electron in a given orbit has a certain definite amount of energy. The only way an electron can lose energy is by dropping f ...
... orbiting a nucleus would lose energy & eventually collapse into the nucleus. In Bohr’s model, an electron can travel around a nucleus without radiating energy. Furthermore, an electron in a given orbit has a certain definite amount of energy. The only way an electron can lose energy is by dropping f ...
Know (main topic)
... divide, add, and subtract, very large and very small numbers. -describe the difference bet. the four states of matter. ...
... divide, add, and subtract, very large and very small numbers. -describe the difference bet. the four states of matter. ...
CHAPTER 4: ABUNDANCE AND RADIOACTIVITY OF UNSTABLE
... spallation, by very-high-energy cosmic protons and a smaller percentage of helium nuclei from the sun, from further away in our Galaxy and probably from extragalactic space. Mesons reaching the earth surface have a very high penetrating power and can be observed at great depth below the ground or wa ...
... spallation, by very-high-energy cosmic protons and a smaller percentage of helium nuclei from the sun, from further away in our Galaxy and probably from extragalactic space. Mesons reaching the earth surface have a very high penetrating power and can be observed at great depth below the ground or wa ...
Balancing a Chemical Equation
... so that the left side has the same number of atoms as the right side for EACH element in order to balance the equation. Check your answer to see if: The numbers of atoms on both sides of the equation are now balanced. The coefficients are in the lowest possible whole number ratios. (reduced) ...
... so that the left side has the same number of atoms as the right side for EACH element in order to balance the equation. Check your answer to see if: The numbers of atoms on both sides of the equation are now balanced. The coefficients are in the lowest possible whole number ratios. (reduced) ...
Chapter 2: Atoms and Electrons
... light has a wave character as proposed by Huygens, in contrast to the particle or corpuscular view of light proposed by Newton. But on the other hand, many experiments at the turn of the 20th century clearly showed that a new theory of light was needed. ...
... light has a wave character as proposed by Huygens, in contrast to the particle or corpuscular view of light proposed by Newton. But on the other hand, many experiments at the turn of the 20th century clearly showed that a new theory of light was needed. ...
MOLES! - ChemGod.com
... The implication of my chemical reaction is that it isn’t the mass of the chemicals that matters, but the number of atoms or molecules. Things react by colliding with other things on a particle (atom or ...
... The implication of my chemical reaction is that it isn’t the mass of the chemicals that matters, but the number of atoms or molecules. Things react by colliding with other things on a particle (atom or ...
No Slide Title
... orbitals to form a new set of hybrid orbitals. 1. Mix at least 2 nonequivalent atomic orbitals (e.g. s and p). Hybrid orbitals have very different shape from original atomic orbitals. 2. Number of hybrid orbitals is equal to number of pure atomic orbitals used in the hybridization ...
... orbitals to form a new set of hybrid orbitals. 1. Mix at least 2 nonequivalent atomic orbitals (e.g. s and p). Hybrid orbitals have very different shape from original atomic orbitals. 2. Number of hybrid orbitals is equal to number of pure atomic orbitals used in the hybridization ...
File
... Ex: CH2Cl2 C: 1 x 12.01 g = 12.01 g H: 2 x 1.01 g = 2.02 g Cl: 2 x 35.45 g = 70.90 g 84.93 g CH2Cl2 % C = 12.01 g / 84.93 g x 100 = 14.14 % C % H = 2.02 g / 84.93 g x 100 = 2.38 % H % Cl = 70.90 g / 84.93 g x 100 = 83.48 % Cl ...
... Ex: CH2Cl2 C: 1 x 12.01 g = 12.01 g H: 2 x 1.01 g = 2.02 g Cl: 2 x 35.45 g = 70.90 g 84.93 g CH2Cl2 % C = 12.01 g / 84.93 g x 100 = 14.14 % C % H = 2.02 g / 84.93 g x 100 = 2.38 % H % Cl = 70.90 g / 84.93 g x 100 = 83.48 % Cl ...
An Introduction to Cross Sections 1. Definition of cross section for
... m, and incident velocity v, and the target particle has charge Ze and mass Mom (and thus can be considered to remain at rest after the scattering.) If we treat this as a central-force problem in classical mechanics, we know that the actual trajectory is a hyperbola. This calculation of the exact dif ...
... m, and incident velocity v, and the target particle has charge Ze and mass Mom (and thus can be considered to remain at rest after the scattering.) If we treat this as a central-force problem in classical mechanics, we know that the actual trajectory is a hyperbola. This calculation of the exact dif ...
Atomic theory
In chemistry and physics, atomic theory is a scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms. It began as a philosophical concept in ancient Greece and entered the scientific mainstream in the early 19th century when discoveries in the field of chemistry showed that matter did indeed behave as if it were made up of atoms.The word atom comes from the Ancient Greek adjective atomos, meaning ""uncuttable"". 19th century chemists began using the term in connection with the growing number of irreducible chemical elements. While seemingly apropos, around the turn of the 20th century, through various experiments with electromagnetism and radioactivity, physicists discovered that the so-called ""uncuttable atom"" was actually a conglomerate of various subatomic particles (chiefly, electrons, protons and neutrons) which can exist separately from each other. In fact, in certain extreme environments, such as neutron stars, extreme temperature and pressure prevents atoms from existing at all. Since atoms were found to be divisible, physicists later invented the term ""elementary particles"" to describe the ""uncuttable"", though not indestructible, parts of an atom. The field of science which studies subatomic particles is particle physics, and it is in this field that physicists hope to discover the true fundamental nature of matter.