Atomic radius decreases across a period due to the increasing
... (b) Because fluorine is more electronegative than chlorine it is more reactive and the fluoride ions cannot be displaced by chlorine so no reaction occurs. No colour change will be observed. 16. (a)Elements are arranged according to increasing atomic number (Z). (b) Electronegativity increases acros ...
... (b) Because fluorine is more electronegative than chlorine it is more reactive and the fluoride ions cannot be displaced by chlorine so no reaction occurs. No colour change will be observed. 16. (a)Elements are arranged according to increasing atomic number (Z). (b) Electronegativity increases acros ...
Honors Midterm - Stamford High School
... Covalent compound – a compound formed between two or more non-metals with bonds that are formed by sharing electrons. Metallic compound – a compound formed between metals with bonds that consist of the attractions of the free-floating valence electrons for the positively charged metal ions. ...
... Covalent compound – a compound formed between two or more non-metals with bonds that are formed by sharing electrons. Metallic compound – a compound formed between metals with bonds that consist of the attractions of the free-floating valence electrons for the positively charged metal ions. ...
AP Chap 2
... The Energy Levels of Electrons • Energy is the capacity to cause change • Potential energy is the energy that matter has because of its location or structure • The electrons of an atom differ in their amounts of potential energy • An electron’s state of potential energy is called its energy level, ...
... The Energy Levels of Electrons • Energy is the capacity to cause change • Potential energy is the energy that matter has because of its location or structure • The electrons of an atom differ in their amounts of potential energy • An electron’s state of potential energy is called its energy level, ...
Part a
... Carbon methane gas (CH4) atoms atom (a) Formation of four single covalent bonds: carbon shares four electron pairs with four hydrogen atoms. Copyright © 2010 Pearson Education, Inc. ...
... Carbon methane gas (CH4) atoms atom (a) Formation of four single covalent bonds: carbon shares four electron pairs with four hydrogen atoms. Copyright © 2010 Pearson Education, Inc. ...
No Slide Title
... Valence bond theory – bonds are formed by sharing of e- from overlapping atomic orbitals. ...
... Valence bond theory – bonds are formed by sharing of e- from overlapping atomic orbitals. ...
EXAM 1-A fall 2004.doc
... II. (20 points) Fill in the blanks with the correct word or statement. The value of each question is in the parentheses following the number. 1. (1) The linear arrangement of amino acids in the polypeptide chain is referred to as the __________________ structure of the protein. 4. (1) Cholesterol, t ...
... II. (20 points) Fill in the blanks with the correct word or statement. The value of each question is in the parentheses following the number. 1. (1) The linear arrangement of amino acids in the polypeptide chain is referred to as the __________________ structure of the protein. 4. (1) Cholesterol, t ...
Chemistry Comes Alive: Part A
... Covalent Bonds • Unequal sharing by atoms with different electron-attracting abilities produces polar molecules • H2O • Atoms with six or seven valence shell electrons are electronegative, e.g., oxygen • Atoms with one or two valence shell electrons are electropositive, e.g., sodium ...
... Covalent Bonds • Unequal sharing by atoms with different electron-attracting abilities produces polar molecules • H2O • Atoms with six or seven valence shell electrons are electronegative, e.g., oxygen • Atoms with one or two valence shell electrons are electropositive, e.g., sodium ...
Bio_130_files/Chemistry Review
... – Cations have lost one or more electrons giving them a positive charge(+) • Typically occur between elements on opposite sides of the periodic table. ...
... – Cations have lost one or more electrons giving them a positive charge(+) • Typically occur between elements on opposite sides of the periodic table. ...
Bio_130_files/Chemistry Review
... – Cations have lost one or more electrons giving them a positive charge(+) • Typically occur between elements on opposite sides of the periodic table. ...
... – Cations have lost one or more electrons giving them a positive charge(+) • Typically occur between elements on opposite sides of the periodic table. ...
SUMMER WORK AP Chemistry
... experiment requires 15.0 g of cyclohexane, whose density at 25 °C is 0.7781 g/mL. What volume of cyclohexane should be used? (c) A spherical ball of lead has a diameter of 5.0 cm. What is the mass of the sphere if lead has a density of 11.34 g.cm3? (The volume of a sphere is (4/3)πr3where r is the r ...
... experiment requires 15.0 g of cyclohexane, whose density at 25 °C is 0.7781 g/mL. What volume of cyclohexane should be used? (c) A spherical ball of lead has a diameter of 5.0 cm. What is the mass of the sphere if lead has a density of 11.34 g.cm3? (The volume of a sphere is (4/3)πr3where r is the r ...
The Chemical Context of Life PPT
... • An anion is a negatively charged ion • An ionic bond is an attraction between an anion and a cation • Compounds formed by ionic bonds are called ionic compounds, or salts • Salts, such as sodium chloride (table salt), are often found in nature as crystals ...
... • An anion is a negatively charged ion • An ionic bond is an attraction between an anion and a cation • Compounds formed by ionic bonds are called ionic compounds, or salts • Salts, such as sodium chloride (table salt), are often found in nature as crystals ...
The Chemical Context of Life
... • An anion is a negatively charged ion • An ionic bond is an attraction between an anion and a cation • Compounds formed by ionic bonds are called ionic compounds, or salts • Salts, such as sodium chloride (table salt), are often found in nature as crystals ...
... • An anion is a negatively charged ion • An ionic bond is an attraction between an anion and a cation • Compounds formed by ionic bonds are called ionic compounds, or salts • Salts, such as sodium chloride (table salt), are often found in nature as crystals ...
Atomic Systems and Bonding
... outside shell had only one electron When the valence electron in any atom gains sufficient energy from some outside force, it can break away from the parent atom and become what is called a free electron Atoms with few electrons in their valence shell tend to have more free electrons since these val ...
... outside shell had only one electron When the valence electron in any atom gains sufficient energy from some outside force, it can break away from the parent atom and become what is called a free electron Atoms with few electrons in their valence shell tend to have more free electrons since these val ...
SNC2P
... 9. Use electron dot diagrams to show the bonding in the following ionic compounds. (show electron transfer, draw stick diagrams, write formula) a) Na + Br b) Mg + F c) Al + Cl 10. Use electron dot diagrams to show the bonding in the following covalent compounds. (show electron sharing, draw ions wit ...
... 9. Use electron dot diagrams to show the bonding in the following ionic compounds. (show electron transfer, draw stick diagrams, write formula) a) Na + Br b) Mg + F c) Al + Cl 10. Use electron dot diagrams to show the bonding in the following covalent compounds. (show electron sharing, draw ions wit ...
Integrated Science 3
... 5. Explain what is meant by a derived value. Give an example. 6. Show as scientific notation (standard form): (a) 0.000 000 000 0105 km (b) 91 730 000 000 000 000 dimes Show in long form: (c) 6.05 x 10-6 cm (d) 9.90 x 104 dimes 7. Sketch and draw the Lewis dot structures for CO2, H2O, CH4 and NH3. W ...
... 5. Explain what is meant by a derived value. Give an example. 6. Show as scientific notation (standard form): (a) 0.000 000 000 0105 km (b) 91 730 000 000 000 000 dimes Show in long form: (c) 6.05 x 10-6 cm (d) 9.90 x 104 dimes 7. Sketch and draw the Lewis dot structures for CO2, H2O, CH4 and NH3. W ...
6 The isolobal analogy
... CrL 6, 2, where L is a two electron donor such as CO, (or any molecule obeying the eighteen electron rule such as 3), the fragments 2a, 2b and 2c are generated by successive homolytic cleavage of M–L bonds on one octahedral face. As L is a two-electron donor, homolytic cleavage of CrL 6 gives CrL 5- ...
... CrL 6, 2, where L is a two electron donor such as CO, (or any molecule obeying the eighteen electron rule such as 3), the fragments 2a, 2b and 2c are generated by successive homolytic cleavage of M–L bonds on one octahedral face. As L is a two-electron donor, homolytic cleavage of CrL 6 gives CrL 5- ...
Bond Order and Chemical Properties of BF, CO
... is a balance between minimizing the formal charge and completing the octet. In N2, both these properties can be obtained without compromise, 1. For CO, there is one structure that completes the octets, 2, whereas another minimizes the formal charge, 3. BF is similar, but with three structures in com ...
... is a balance between minimizing the formal charge and completing the octet. In N2, both these properties can be obtained without compromise, 1. For CO, there is one structure that completes the octets, 2, whereas another minimizes the formal charge, 3. BF is similar, but with three structures in com ...
Atom (A) or Ion (I)
... 83. What is molarity? 84. If I have 2.5 mol of calcium carbonate in .30 L of solution, what is the molarity? 85. If I have 700.0 mL of a 5.0 M NaOH solution, how many grams of NaOH were used to make the solution? 86. What is meant by chemical equilibrium? 87. What factors affect the rate of a reacti ...
... 83. What is molarity? 84. If I have 2.5 mol of calcium carbonate in .30 L of solution, what is the molarity? 85. If I have 700.0 mL of a 5.0 M NaOH solution, how many grams of NaOH were used to make the solution? 86. What is meant by chemical equilibrium? 87. What factors affect the rate of a reacti ...
21 - Department of Chemistry | Oregon State University
... expanded the definitions of bases and acids to include species that didn't necessarily transfer a proton. A Lewis base donates a pair of electrons to make a new bond. A Lewis acid accepts a pair of electrons to make a new bond. We previously identified ammonia as a base because of its ability to acc ...
... expanded the definitions of bases and acids to include species that didn't necessarily transfer a proton. A Lewis base donates a pair of electrons to make a new bond. A Lewis acid accepts a pair of electrons to make a new bond. We previously identified ammonia as a base because of its ability to acc ...
Document
... Valence Shell Electron Pair Repulsion (VSEPR) theory is the model mostly used to predict molecular shape. Electron pairs on the central atom repel one another. The two dimensional dot structure of methane, CH4. gives the angles between electron pairs of 90o. But the dot structure angles are arbitrar ...
... Valence Shell Electron Pair Repulsion (VSEPR) theory is the model mostly used to predict molecular shape. Electron pairs on the central atom repel one another. The two dimensional dot structure of methane, CH4. gives the angles between electron pairs of 90o. But the dot structure angles are arbitrar ...
Chapter 2 Study Guides
... 13. The prefix mono-‐ means “one,” and the prefix poly-‐ means “many.” How are these meanings related to the terms monomer and polymer? ...
... 13. The prefix mono-‐ means “one,” and the prefix poly-‐ means “many.” How are these meanings related to the terms monomer and polymer? ...
Mid-Term OR Study Guide
... (E) Are the molecules polar or nonpolar overall? Explain your reasoning for each one. A solution containing barium ions (electronegativity = 0.89) is reacted with a solution containing phosphide (electronegativity = 02.19) ions. (B) Will the bond type be ionic, polar or nonpolar covalent? Show any r ...
... (E) Are the molecules polar or nonpolar overall? Explain your reasoning for each one. A solution containing barium ions (electronegativity = 0.89) is reacted with a solution containing phosphide (electronegativity = 02.19) ions. (B) Will the bond type be ionic, polar or nonpolar covalent? Show any r ...
The Chemical Context of Life Chapter 2 Notes
... valence e- by two atoms -ex. Hydrogen atoms will share their electrons. They become H-H ...
... valence e- by two atoms -ex. Hydrogen atoms will share their electrons. They become H-H ...