Review Outline for Atomic Structure Test
... J) Draw the electron dot diagram (Lewis Dot Structure) and then tell if it would give up or take on electrons to get a full shell. Also tell what charge it would have (positive or negative and how much ex: +2) ...
... J) Draw the electron dot diagram (Lewis Dot Structure) and then tell if it would give up or take on electrons to get a full shell. Also tell what charge it would have (positive or negative and how much ex: +2) ...
Bonding 1 - Department of Chemistry
... The accumulation of electron density between the nuclei put the electron in a position where it interacts strongly with both nuclei. Nuclei are shielded from each other The energy of the molecule is lower ...
... The accumulation of electron density between the nuclei put the electron in a position where it interacts strongly with both nuclei. Nuclei are shielded from each other The energy of the molecule is lower ...
24 Sept 08 - Seattle Central College
... macroscopic level. You have to consider an unknown sample on the molecular level to determine if it is a mixture or pure substance. ...
... macroscopic level. You have to consider an unknown sample on the molecular level to determine if it is a mixture or pure substance. ...
with answers
... (d) Explain why compounds of the formulae Na2O and NH3 form from their respective constituent elements. Give reasons for your answer. (4P) Na attains inert gas configuration by losing its one valence (forming Na+). N reaches inert gas configuration by gaining three electrons (through formation of th ...
... (d) Explain why compounds of the formulae Na2O and NH3 form from their respective constituent elements. Give reasons for your answer. (4P) Na attains inert gas configuration by losing its one valence (forming Na+). N reaches inert gas configuration by gaining three electrons (through formation of th ...
Oxidation-Reduction (REDOX) Reactions
... oxidation and reduction. LEO the lion says ‘GER’ : LEO stands for “Loss of Electrons is Oxidation” and GER stands for “Gain of Electrons is Reduction” OIL RIG : OIL stands for “Oxidation Involves Loss (of electrons)”, and RIG stands for “Reduction Involves Gain (of electrons).” In a redox reaction, ...
... oxidation and reduction. LEO the lion says ‘GER’ : LEO stands for “Loss of Electrons is Oxidation” and GER stands for “Gain of Electrons is Reduction” OIL RIG : OIL stands for “Oxidation Involves Loss (of electrons)”, and RIG stands for “Reduction Involves Gain (of electrons).” In a redox reaction, ...
A Model of the Chemical Bond Must Be Rooted in Quantum
... example, a particular bond is stronger or longer than another one. It is therefore essential that there is a transparent and causal relationship between the model s concepts and quantities (e.g., orbital overlap in our model) on one hand and the observables of interest (e.g., bond strength) on the o ...
... example, a particular bond is stronger or longer than another one. It is therefore essential that there is a transparent and causal relationship between the model s concepts and quantities (e.g., orbital overlap in our model) on one hand and the observables of interest (e.g., bond strength) on the o ...
SCH 3U - Norbraten
... thus, non-polar covalent solids and liquids have relatively low mp and bp and tend to be quite volatile; ...
... thus, non-polar covalent solids and liquids have relatively low mp and bp and tend to be quite volatile; ...
Helium Atom
... The emission spectra of He consists of a number of series in the visible region of the spectrum as well as in the near & far UV regions. There are twice as many line series as for the alkalis; two principal series in the visible and near UV, as well as two diffuse, two sharp and two fundamental seri ...
... The emission spectra of He consists of a number of series in the visible region of the spectrum as well as in the near & far UV regions. There are twice as many line series as for the alkalis; two principal series in the visible and near UV, as well as two diffuse, two sharp and two fundamental seri ...
Question Paper
... What is the repeating unit in ‘Organo Silicon polymer? Name the starting (raw) material used in the manufacture of Organo Silicon Polymer. ...
... What is the repeating unit in ‘Organo Silicon polymer? Name the starting (raw) material used in the manufacture of Organo Silicon Polymer. ...
Document
... Volume-amount of space an object occupies Mass-amount of matter an object has Weight-force produced by gravity on an object ...
... Volume-amount of space an object occupies Mass-amount of matter an object has Weight-force produced by gravity on an object ...
The Modern Atomic Model
... Bohr Model of the Atom (review) •Energy levels contain electrons. •Electrons travel around the nucleus. •Different orbitals varied by different quantum (energy). •Gaps between energy levels were not equal. ...
... Bohr Model of the Atom (review) •Energy levels contain electrons. •Electrons travel around the nucleus. •Different orbitals varied by different quantum (energy). •Gaps between energy levels were not equal. ...
Pretest 4.3 2008
... concentrated in a nucleus and the negative charges surround the nucleus. c. According to Rutherford, the atom is a positive sphere in which the negative charges are ...
... concentrated in a nucleus and the negative charges surround the nucleus. c. According to Rutherford, the atom is a positive sphere in which the negative charges are ...
SIMULATION PRODUCTS AND THE MULTI
... (with mass and a precise position in space) and a wave (without mass or a fixed position), while chemists accumulated information on the properties, reactions, and atomic masses of the elements. The physical observation of light as both a particle and a wave led to the development of the quantum-mec ...
... (with mass and a precise position in space) and a wave (without mass or a fixed position), while chemists accumulated information on the properties, reactions, and atomic masses of the elements. The physical observation of light as both a particle and a wave led to the development of the quantum-mec ...
Chapter 5
... In 1896 Antoine Becquerel discovered that certain elements decomposed to form other elements by emitting radiation. There are three types of radiation alpha () particle which is a He+2 ion beta () particle which is an egamma () ray which is made up of high energy and has no charge ...
... In 1896 Antoine Becquerel discovered that certain elements decomposed to form other elements by emitting radiation. There are three types of radiation alpha () particle which is a He+2 ion beta () particle which is an egamma () ray which is made up of high energy and has no charge ...
eastern illinois university
... 22. Consider the following unbalanced equation: LaCl3 + Na2CO3 La2(CO3)3 + NaCl. When this equation is balanced (simplest whole number coefficients), the coefficient for NaCl is: a. 1 b. 2 c. 3 d. 5 e. 6 23. Consider the balanced, but incomplete, equation: 2AlCl3 + Ca3N22X + 3CaCl2. The formula o ...
... 22. Consider the following unbalanced equation: LaCl3 + Na2CO3 La2(CO3)3 + NaCl. When this equation is balanced (simplest whole number coefficients), the coefficient for NaCl is: a. 1 b. 2 c. 3 d. 5 e. 6 23. Consider the balanced, but incomplete, equation: 2AlCl3 + Ca3N22X + 3CaCl2. The formula o ...
Atomic Structure and Stoichiometry Summary Sheet
... 2. Atoms of a given element are identical in size, mass and other properties; atoms of different elements differ in size, mass and other properties. 3. Atoms cannot be subdivided, created or destroyed. 4. Atoms of different elements combine in simple whole number ratios to form chemical compoun ...
... 2. Atoms of a given element are identical in size, mass and other properties; atoms of different elements differ in size, mass and other properties. 3. Atoms cannot be subdivided, created or destroyed. 4. Atoms of different elements combine in simple whole number ratios to form chemical compoun ...
Document
... Calculate the atomic mass of iridium. Iridium has two isotopes. Iridium-191 has a mass of 191.0 amu and a percent abundance of 37.58%. Iridium-193 has a mass of 193.0 amu and a percent abundance of 62.42%. ...
... Calculate the atomic mass of iridium. Iridium has two isotopes. Iridium-191 has a mass of 191.0 amu and a percent abundance of 37.58%. Iridium-193 has a mass of 193.0 amu and a percent abundance of 62.42%. ...
Plan for Wed, 12 Aug 09
... sp orbital mixing (a little hybridization) • lowers the energy of the s2s orbitals and • raises the energy of the s2p orbitals. • As a result, E(s2p) > E(p 2p) for B2, C2, and N2. • As one moves right in Row 2, 2s and 2p get further apart in energy, decreasing s–p mixing E(s2p) < E(p2p) for O2, F ...
... sp orbital mixing (a little hybridization) • lowers the energy of the s2s orbitals and • raises the energy of the s2p orbitals. • As a result, E(s2p) > E(p 2p) for B2, C2, and N2. • As one moves right in Row 2, 2s and 2p get further apart in energy, decreasing s–p mixing E(s2p) < E(p2p) for O2, F ...
F1 (a) Noble gas atoms have an outer shell structure ns2np6, where
... one electron (and usually two). To put it less formally, you could say that in the transition elements, inner d subshells begin to fill while an outer s subshell already contains at least one electron. (b) In most of the lanthanides, the 4f subshells begin to fill when there are two electrons in the ...
... one electron (and usually two). To put it less formally, you could say that in the transition elements, inner d subshells begin to fill while an outer s subshell already contains at least one electron. (b) In most of the lanthanides, the 4f subshells begin to fill when there are two electrons in the ...
Chemistry is a material science
... Chemistry is the _______ of ______ its ____________, the ______ matter undergoes, and the _______ associated with these changes. Matter is anything that has _______ and takes up _________. This fundamental definition of matter leads to a common property of matter, namely, _______. Density is equal t ...
... Chemistry is the _______ of ______ its ____________, the ______ matter undergoes, and the _______ associated with these changes. Matter is anything that has _______ and takes up _________. This fundamental definition of matter leads to a common property of matter, namely, _______. Density is equal t ...
SCH 3U - othsmath
... 2) Going down a group, a new energy level is added with each subsequent atom, ensuring the valence electrons are moved further and further from the nucleus. This increases the shielding provided by non-valence electrons, decreases the ENC (even though the number of protons in the nucleus is increasi ...
... 2) Going down a group, a new energy level is added with each subsequent atom, ensuring the valence electrons are moved further and further from the nucleus. This increases the shielding provided by non-valence electrons, decreases the ENC (even though the number of protons in the nucleus is increasi ...
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.