The Basics - I`m a faculty member, and I need web space. What
... • 1st ionization energy: the energy required to remove the first electron • 2nd ionization energy: the energy required to remove the second electron • 3rd ionization energy: the energy required removing the third electron • Trend: ionization energy increases from left to right and bottom to top ...
... • 1st ionization energy: the energy required to remove the first electron • 2nd ionization energy: the energy required to remove the second electron • 3rd ionization energy: the energy required removing the third electron • Trend: ionization energy increases from left to right and bottom to top ...
Chemistry (B) Final Exam Study Guide 1
... ____ 51. What is the shape of the 3p atomic orbital? a. sphere c. bar b. dumbbell d. two perpendicular dumbbells ____ 52. What is the electron configuration of potassium? a. 1s 2s 2p 3s 3p 4s c. 1s 2s 3s 3p 3d b. 1s 2s 2p 3s 3p d. 1s 2s 2p 3s 3p 4s ____ 53. Which of the following electromagnetic wav ...
... ____ 51. What is the shape of the 3p atomic orbital? a. sphere c. bar b. dumbbell d. two perpendicular dumbbells ____ 52. What is the electron configuration of potassium? a. 1s 2s 2p 3s 3p 4s c. 1s 2s 3s 3p 3d b. 1s 2s 2p 3s 3p d. 1s 2s 2p 3s 3p 4s ____ 53. Which of the following electromagnetic wav ...
Chemistry Comes Alive: Part A
... • Tend to gain, lose, or share electrons (form bonds) with other atoms to achieve stability Types of Chemical Bonds • Ionic • Covalent • Hydrogen Ionic Bonds • Ions are formed by transfer of valence shell electrons between atoms • Anions (– charge) have gained one or more electrons • Cations (+ char ...
... • Tend to gain, lose, or share electrons (form bonds) with other atoms to achieve stability Types of Chemical Bonds • Ionic • Covalent • Hydrogen Ionic Bonds • Ions are formed by transfer of valence shell electrons between atoms • Anions (– charge) have gained one or more electrons • Cations (+ char ...
biology biology - Napa Valley College
... Neutron mass and proton mass are almost identical and are measured in daltons (or ...
... Neutron mass and proton mass are almost identical and are measured in daltons (or ...
Review topics-blog
... proton or neutron. The electrons being so light are one reason why they do not coexist among the protons and neutrons but instead spin around the positively charged nucleus. The proton and electron have the same magnitude of charge, just opposite in charge. So a neutral carbon atom contains 6 ele ...
... proton or neutron. The electrons being so light are one reason why they do not coexist among the protons and neutrons but instead spin around the positively charged nucleus. The proton and electron have the same magnitude of charge, just opposite in charge. So a neutral carbon atom contains 6 ele ...
CHEMISTRY I Final..#1..rev 4KEY
... 26. A sample of a gas is contained in a closed rigid cylinder. According to kinetic molecular theory, what occurs when the gas inside the cylinder is heated? a. The number of gas molecules increases. b. The number of collisions between gas molecules per unit time decreases. c. The average velocity o ...
... 26. A sample of a gas is contained in a closed rigid cylinder. According to kinetic molecular theory, what occurs when the gas inside the cylinder is heated? a. The number of gas molecules increases. b. The number of collisions between gas molecules per unit time decreases. c. The average velocity o ...
CHAPTER 1 -Chemistry -Matter -Elements -Atoms
... 2)An isotope has the atomic number of 8 and a mass number of 17. This element (a) Is an isotopic form of oxygen (b) Has 8 neutrons (c) Has 9 protons if it is in ionic form (d) Is an isotopic form of fluorine (e) Has 17 electrons 3) Which of the following ions has the same number of electrons as Br(a ...
... 2)An isotope has the atomic number of 8 and a mass number of 17. This element (a) Is an isotopic form of oxygen (b) Has 8 neutrons (c) Has 9 protons if it is in ionic form (d) Is an isotopic form of fluorine (e) Has 17 electrons 3) Which of the following ions has the same number of electrons as Br(a ...
Sample Exercise 2.1 Illustrating the Size of an Atom
... Give the chemical symbol, including mass number, for each of the following ions: (a) The ion with 22 protons, 26 neutrons, and 19 electrons; (b) the ion of sulfur that has 16 neutrons and 18 electrons. Solution (a) The number of protons (22) is the atomic number of the element. By referring to a per ...
... Give the chemical symbol, including mass number, for each of the following ions: (a) The ion with 22 protons, 26 neutrons, and 19 electrons; (b) the ion of sulfur that has 16 neutrons and 18 electrons. Solution (a) The number of protons (22) is the atomic number of the element. By referring to a per ...
Ch02-sample-and-practice-set-2
... Give the chemical symbol, including mass number, for each of the following ions: (a) The ion with 22 protons, 26 neutrons, and 19 electrons; (b) the ion of sulfur that has 16 neutrons and 18 electrons. Solution (a) The number of protons (22) is the atomic number of the element. By referring to a per ...
... Give the chemical symbol, including mass number, for each of the following ions: (a) The ion with 22 protons, 26 neutrons, and 19 electrons; (b) the ion of sulfur that has 16 neutrons and 18 electrons. Solution (a) The number of protons (22) is the atomic number of the element. By referring to a per ...
Chemistry Unit Study Guide Key
... pH scale - what is it and what does it tell us – tells how strongly acidic ...
... pH scale - what is it and what does it tell us – tells how strongly acidic ...
Document
... (a) The number of protons is the atomic number of the element. A periodic table or list of elements tells us that the element with atomic number 22 is titanium (Ti). The mass number (protons plus neutrons) of this isotope of titanium is 22 + 26 = 48. Because the ion has three more protons than elect ...
... (a) The number of protons is the atomic number of the element. A periodic table or list of elements tells us that the element with atomic number 22 is titanium (Ti). The mass number (protons plus neutrons) of this isotope of titanium is 22 + 26 = 48. Because the ion has three more protons than elect ...
Test 4 Review
... Covalent Bonds. Covalent bonds are bonds formed by sharing electrons. The electrons of one atom are attracted to the protons of another, but neither atom pulls strongly enough to remove an electron from the other. Covalent bonds form when the electronegativity difference between the elements is less ...
... Covalent Bonds. Covalent bonds are bonds formed by sharing electrons. The electrons of one atom are attracted to the protons of another, but neither atom pulls strongly enough to remove an electron from the other. Covalent bonds form when the electronegativity difference between the elements is less ...
Chemistry can be defined as the study of the composition, structure
... Phosphorous is one of the most abundant minerals in the human body, second only to calcium. This essential mineral is required for the healthy formation of bones and teeth, and is necessary for our bodies to process many of the foods that we eat. It is also a part of the body's energy storage system ...
... Phosphorous is one of the most abundant minerals in the human body, second only to calcium. This essential mineral is required for the healthy formation of bones and teeth, and is necessary for our bodies to process many of the foods that we eat. It is also a part of the body's energy storage system ...
Unit 3: Bonding and Nomenclature Content Outline: Chemical
... c. It has a basic molecular formula of: AB2 (“A” is one element; “B” is the other element) For example: Be F2 2. Trigonal-Planer (3 point pyramid in one plane “flat”) a. Number of atoms bonded to the central atom = 3. b. The molecule has bond angles of 120O. c. It has a basic molecular formula of: A ...
... c. It has a basic molecular formula of: AB2 (“A” is one element; “B” is the other element) For example: Be F2 2. Trigonal-Planer (3 point pyramid in one plane “flat”) a. Number of atoms bonded to the central atom = 3. b. The molecule has bond angles of 120O. c. It has a basic molecular formula of: A ...
Exam Review - hrsbstaff.ednet.ns.ca
... 19. Elements in a group have similar chemical properties because of their similar __. a) nuclear configurations c) mass numbers b) outer electron configurations d) names 20. The period number in the periodic table designates the __ for the row. a) total nuclear charge c) maximum number of outer elec ...
... 19. Elements in a group have similar chemical properties because of their similar __. a) nuclear configurations c) mass numbers b) outer electron configurations d) names 20. The period number in the periodic table designates the __ for the row. a) total nuclear charge c) maximum number of outer elec ...
Chemistry 212 Name:
... Each halogen is obtained by oxidation of the halide ion to the halogen in a molten salt, except fluorine. None of the halogens is particularly abundant in nature, however all are easily accessible in concentrated forms rendering this point moot. All halogens have high electron affinities and ionizat ...
... Each halogen is obtained by oxidation of the halide ion to the halogen in a molten salt, except fluorine. None of the halogens is particularly abundant in nature, however all are easily accessible in concentrated forms rendering this point moot. All halogens have high electron affinities and ionizat ...
PERIODICITY AND ATOMIC STRUCTURE CHAPTER 5
... The modern theory for the structure of the electron is derived from WAVE THEORY as applied to the behaviour of electrons in atoms. Based on the wave theory the electron can be described in terms of the (Schrödinger) Wave Equation and from the solution to the wave equation we can determine the proba ...
... The modern theory for the structure of the electron is derived from WAVE THEORY as applied to the behaviour of electrons in atoms. Based on the wave theory the electron can be described in terms of the (Schrödinger) Wave Equation and from the solution to the wave equation we can determine the proba ...
Answers to practice questions
... _____ 31. If two elements have similar chemical properties, you would expect them to have A) similar atomic masses B) similar atomic radii C) the same number of energy levels D) the same number of outer electrons *What do we call the outer electrons? Valence electrons _____ 32. Which of the followin ...
... _____ 31. If two elements have similar chemical properties, you would expect them to have A) similar atomic masses B) similar atomic radii C) the same number of energy levels D) the same number of outer electrons *What do we call the outer electrons? Valence electrons _____ 32. Which of the followin ...
Unit B review - mvhs
... (A) Be, B, C, N (B) Ne, Ar, Kr, Xe (C) Mg, Ca, Sr, Ba (D) C, P, Se, I (E) Cr, Mn, Fe, Co 22. What is the correct order of decreasing first ionization energies for the elements Be, B, and C? (A) Be>B>C (B) B>Be>C (C) B>C>Be (D) C>Be>B (E) Be>C>B 23. Assume that an element has the following ionization ...
... (A) Be, B, C, N (B) Ne, Ar, Kr, Xe (C) Mg, Ca, Sr, Ba (D) C, P, Se, I (E) Cr, Mn, Fe, Co 22. What is the correct order of decreasing first ionization energies for the elements Be, B, and C? (A) Be>B>C (B) B>Be>C (C) B>C>Be (D) C>Be>B (E) Be>C>B 23. Assume that an element has the following ionization ...
Chapt9
... Ionic Bonding 1. Ionic Bond Electrostatic attraction of positive (cation) and negative (anion) ions Neutral Atoms ...
... Ionic Bonding 1. Ionic Bond Electrostatic attraction of positive (cation) and negative (anion) ions Neutral Atoms ...
Chapter 2
... Define and distinguish among atomic number, mass number, atomic weight, and valence. Given the atomic number and mass number of an atom, how do you determine the number of its neutrons? ___6. Explain why radioactive isotopes are important to biologists. ___7. Explain how its electron configuration i ...
... Define and distinguish among atomic number, mass number, atomic weight, and valence. Given the atomic number and mass number of an atom, how do you determine the number of its neutrons? ___6. Explain why radioactive isotopes are important to biologists. ___7. Explain how its electron configuration i ...
AP Biology
... Define and distinguish among atomic number, mass number, atomic weight, and valence. Given the atomic number and mass number of an atom, how do you determine the number of its neutrons? ___6. Explain why radioactive isotopes are important to biologists. ___7. Explain how its electron configuration i ...
... Define and distinguish among atomic number, mass number, atomic weight, and valence. Given the atomic number and mass number of an atom, how do you determine the number of its neutrons? ___6. Explain why radioactive isotopes are important to biologists. ___7. Explain how its electron configuration i ...
o C
... Elements are the simplest pure substances. An element cannot be changed into simpler substances by any chemical process. ...
... Elements are the simplest pure substances. An element cannot be changed into simpler substances by any chemical process. ...