A New Form of Matter (pdf, 217 kB)
... magnetic traps, the atoms overlapped and formed a single giant (by atomic standards) matter wave. Says Ketterle: "Pictures of BECs can be regarded as photographs of wave functions" -- that is, solutions to Schrodinger's equation. Working independently in 1995, Eric Cornell (National Institute of Sta ...
... magnetic traps, the atoms overlapped and formed a single giant (by atomic standards) matter wave. Says Ketterle: "Pictures of BECs can be regarded as photographs of wave functions" -- that is, solutions to Schrodinger's equation. Working independently in 1995, Eric Cornell (National Institute of Sta ...
16.12.2013 1 Chapter 6 The Periodic Table and Atomic Structure
... • Noble gas electronic configurations are used as a shorthand for writing electronic configurations. • Relates electronic structure to chemical bonding. • Electrons in outermost occupied orbitals give rise to chemical reactivity of an element. • [He] 2s2 2p2 is the shorthand for carbon ...
... • Noble gas electronic configurations are used as a shorthand for writing electronic configurations. • Relates electronic structure to chemical bonding. • Electrons in outermost occupied orbitals give rise to chemical reactivity of an element. • [He] 2s2 2p2 is the shorthand for carbon ...
Summary - Clydebank High School
... Section (d) - Bonding, structure and properties of the first 20 elements. 1. Metallic bonding is an electrostatic attraction between the ................................charged nucleus and the delocalised outer .................................................. 2. Atoms of non-metal elements bond to ...
... Section (d) - Bonding, structure and properties of the first 20 elements. 1. Metallic bonding is an electrostatic attraction between the ................................charged nucleus and the delocalised outer .................................................. 2. Atoms of non-metal elements bond to ...
Grade 11 Review Package
... involves two pairs of electrons shared between two atoms, and a triple bond involves three pairs of electrons. Figure R.7 shows the formation of a covalent bond between two non-metals, carbon and hydrogen atoms, in a molecule of methane, CH4 . The electronegativity of an element is a relative measur ...
... involves two pairs of electrons shared between two atoms, and a triple bond involves three pairs of electrons. Figure R.7 shows the formation of a covalent bond between two non-metals, carbon and hydrogen atoms, in a molecule of methane, CH4 . The electronegativity of an element is a relative measur ...
Chapter 6 Electronic Structure of Atoms
... numbers:Principal Quantum Number, n. This is the same as Bohr’s n. As n becomes larger, the atom becomes larger and the electron is further from the nucleus. Angular Quantum Number, l. This quantum number depends on the value of n. The values of l begin at 0 and increase to (n - 1). We usually use l ...
... numbers:Principal Quantum Number, n. This is the same as Bohr’s n. As n becomes larger, the atom becomes larger and the electron is further from the nucleus. Angular Quantum Number, l. This quantum number depends on the value of n. The values of l begin at 0 and increase to (n - 1). We usually use l ...
Circumstellar and Interstellar Molecules
... behavior of the wave function under reflection in the plane containing the two nuclei. For polyatomic molecules, electronic transitions are often connected to the excitation of specific types of electrons or electrons associated with a small group of atoms in the species. ...
... behavior of the wave function under reflection in the plane containing the two nuclei. For polyatomic molecules, electronic transitions are often connected to the excitation of specific types of electrons or electrons associated with a small group of atoms in the species. ...
PHYSICAL SETTING CHEMISTRY
... 2.3 × 1014 hertz. Using your graph, estimate the energy associated with this spectral line. [1] 68 Explain, in terms of subatomic particles and energy states, why light is emitted by the hydrogen gas. [1] 69 Identify one condition not mentioned in the passage, under which hydrogen gas behaves most l ...
... 2.3 × 1014 hertz. Using your graph, estimate the energy associated with this spectral line. [1] 68 Explain, in terms of subatomic particles and energy states, why light is emitted by the hydrogen gas. [1] 69 Identify one condition not mentioned in the passage, under which hydrogen gas behaves most l ...
pptx
... Bohr- “Electron in orbit with only certain particular energies”. This implies that an electron in Bohr model of hydrogen atom: a. is always at one particular distance from nucleus b. can be at any distance from nucleus. c. can be at certain distances from nucleus corresponding to energy levels it ca ...
... Bohr- “Electron in orbit with only certain particular energies”. This implies that an electron in Bohr model of hydrogen atom: a. is always at one particular distance from nucleus b. can be at any distance from nucleus. c. can be at certain distances from nucleus corresponding to energy levels it ca ...
112 ex i lec outline
... In 1905 Einstein used Planck’s quantum theory to explain the photoelectric effect. Experiments had shown that when light shines on metals, electrons could be ejected from the surface of the metals. For each metal there is a minimum frequency of light required to cause an electron to be released. Pla ...
... In 1905 Einstein used Planck’s quantum theory to explain the photoelectric effect. Experiments had shown that when light shines on metals, electrons could be ejected from the surface of the metals. For each metal there is a minimum frequency of light required to cause an electron to be released. Pla ...
Document
... (c) Aluminum is a metal in Group 3A(13). It loses three electrons to have the same number of electrons as 10Ne. The ion is Al3+ ...
... (c) Aluminum is a metal in Group 3A(13). It loses three electrons to have the same number of electrons as 10Ne. The ion is Al3+ ...
Quarterly 1 Review Trupia - Trupia
... (4) positron (4) the same quantity of charge and the opposite ...
... (4) positron (4) the same quantity of charge and the opposite ...
9/6/12 - Note: Once it is downloaded, click SET
... - Molecular formulas give information only about what makes up a compound. o Example: the molecular formula for aspirin is C9H8O4 - A structural formula shows how the atoms are connected o Two-dimensional models do not show the molecule’s true shape ...
... - Molecular formulas give information only about what makes up a compound. o Example: the molecular formula for aspirin is C9H8O4 - A structural formula shows how the atoms are connected o Two-dimensional models do not show the molecule’s true shape ...
Infrared spectroscopy- Teachers notes - Mr-Morgan
... The C-C and C-O bond absorption is found in the fingerprint region where there are lots of peaks so it is difficult to assign these. The C=O bond is found around 1700cm-1, so this is useful as is the O-H at 2500-3300cm-1, which is very broad and the C-H at 2800-2900cm-1. ...
... The C-C and C-O bond absorption is found in the fingerprint region where there are lots of peaks so it is difficult to assign these. The C=O bond is found around 1700cm-1, so this is useful as is the O-H at 2500-3300cm-1, which is very broad and the C-H at 2800-2900cm-1. ...
Learning material
... Our second clue comes from evidence of the internal structure of the atom itself. To set this in context let’s begin by looking at an attempt by J. J Thomson to produce a picture of the inside of an atom. Recall that even up to the beginning of the 20th century atoms were regarded as indivisible. Th ...
... Our second clue comes from evidence of the internal structure of the atom itself. To set this in context let’s begin by looking at an attempt by J. J Thomson to produce a picture of the inside of an atom. Recall that even up to the beginning of the 20th century atoms were regarded as indivisible. Th ...
Atoms in Molecules
... the nuclei and its flow in the presence of external fields are the physical manifestations of the forces operative in matter and they determine the form of matter in real space. It therefore should come as no surprise that the charge and current distributions serve as the carriers of physical inform ...
... the nuclei and its flow in the presence of external fields are the physical manifestations of the forces operative in matter and they determine the form of matter in real space. It therefore should come as no surprise that the charge and current distributions serve as the carriers of physical inform ...
Document
... (c) Aluminum is a metal in Group 3A(13). It loses three electrons to have the same number of electrons as 10Ne. The ion is Al3+ ...
... (c) Aluminum is a metal in Group 3A(13). It loses three electrons to have the same number of electrons as 10Ne. The ion is Al3+ ...
Chapter 7 - Angelfire
... Section 1: Names of Binary Compounds • Binary compounds are those formed from only 2 elements. • To write their formulas the positive ion is written first and then the negative. • To name them use the complete name of the positive ion and add the negative ion name but change the ending to “-ide.” ( ...
... Section 1: Names of Binary Compounds • Binary compounds are those formed from only 2 elements. • To write their formulas the positive ion is written first and then the negative. • To name them use the complete name of the positive ion and add the negative ion name but change the ending to “-ide.” ( ...
Entanglement of Atoms via Cold Controlled Collisions
... pulse (iii) and population detection (iv) without moving the potential back to the origin. This would be a way of discriminating between Mott and superfluid phases for particles in an optical lattice [7]. (c) Apart from that, if one is able to address individual wells with a laser, one can also perf ...
... pulse (iii) and population detection (iv) without moving the potential back to the origin. This would be a way of discriminating between Mott and superfluid phases for particles in an optical lattice [7]. (c) Apart from that, if one is able to address individual wells with a laser, one can also perf ...
Writing Chemical Formulas and Chemical Reactions
... Types of Chemical Reactions It is important to be able to classify chemical reactions as it enables scientists to predict possible products or outcomes. For example, think of appropriate storage of chemicals… Why are some chemicals stored in dark glass jars? Why is it inappropriate to store propane ...
... Types of Chemical Reactions It is important to be able to classify chemical reactions as it enables scientists to predict possible products or outcomes. For example, think of appropriate storage of chemicals… Why are some chemicals stored in dark glass jars? Why is it inappropriate to store propane ...
Quantum Numbers
... • Transition metals have incomplete d subshells or they easily form cations with incomplete d subshells • In the first row (Sc to Cu), the Aufbau principle and Hund’s rule are respected except in two cases: • Cr should be [Ar]4s23d4 but instead it is [Ar]4s13d5 • Cu should be [Ar]4s23d9 but instead ...
... • Transition metals have incomplete d subshells or they easily form cations with incomplete d subshells • In the first row (Sc to Cu), the Aufbau principle and Hund’s rule are respected except in two cases: • Cr should be [Ar]4s23d4 but instead it is [Ar]4s13d5 • Cu should be [Ar]4s23d9 but instead ...
Types of Reactions notes 02 Types of chemical reactions
... NaCl(aq) – means that the chemical is disolved in water. In this case it would be salt dissolved in water. ...
... NaCl(aq) – means that the chemical is disolved in water. In this case it would be salt dissolved in water. ...
Chemical bond
A chemical bond is an attraction between atoms that allows the formation of chemical substances that contain two or more atoms. The bond is caused by the electrostatic force of attraction between opposite charges, either between electrons and nuclei, or as the result of a dipole attraction. The strength of chemical bonds varies considerably; there are ""strong bonds"" such as covalent or ionic bonds and ""weak bonds"" such as Dipole-dipole interaction, the London dispersion force and hydrogen bonding.Since opposite charges attract via a simple electromagnetic force, the negatively charged electrons that are orbiting the nucleus and the positively charged protons in the nucleus attract each other. An electron positioned between two nuclei will be attracted to both of them, and the nuclei will be attracted toward electrons in this position. This attraction constitutes the chemical bond. Due to the matter wave nature of electrons and their smaller mass, they must occupy a much larger amount of volume compared with the nuclei, and this volume occupied by the electrons keeps the atomic nuclei relatively far apart, as compared with the size of the nuclei themselves. This phenomenon limits the distance between nuclei and atoms in a bond.In general, strong chemical bonding is associated with the sharing or transfer of electrons between the participating atoms. The atoms in molecules, crystals, metals and diatomic gases—indeed most of the physical environment around us—are held together by chemical bonds, which dictate the structure and the bulk properties of matter.All bonds can be explained by quantum theory, but, in practice, simplification rules allow chemists to predict the strength, directionality, and polarity of bonds. The octet rule and VSEPR theory are two examples. More sophisticated theories are valence bond theory which includes orbital hybridization and resonance, and the linear combination of atomic orbitals molecular orbital method which includes ligand field theory. Electrostatics are used to describe bond polarities and the effects they have on chemical substances.