Please do question 5 and please let your handwrite to be clear and short answers, thanks m. Brn. TeThe number of lone dots (L.e. unpaired electrons) around an element indicate the number ofcovalent bonds the element normally can make. This is known as the "valence number" (not to beconfused with the number of valence electrons).5. For each of the following elements, indicate the number of covalent bonds that it will normally make.a H =b. B =C. C=d. N=e. O=f. F =g. Si =h. P=LS=i CI =k. As =L Se =m. Br =n. Te =0. 1=p. At =The primary purpose of Lewis Dot Structures is to depict covalent bonds and molecules. Whendrawing a simple molecule like H,O, start by drawing the Lewis Structure for the element thal can makethe most number of bonds. Then draw the structures of the other elements, matching up lone dots toform shared pairs between the symbols. For example, with water:H.•8. •Helements, Each

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Answered: 5. For each of the following elements,…

Living by Chemistry

2nd Edition

ISBN:9781464142314

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Publisher:Angelica M. Stacy

ChapterU2: Smells: Molecular Structure And Properties

Section: Chapter Questions

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For three simple molecules of your own choice, apply the rules for writing Lewis structures. Write your discussion as if you are explaining the method to someone who is not familiar with Lewis structures.
3. What type of elements form ionic bonds with metals? 4. What type of elements form ionic bonds with nonmetals? 5. Write the chemical formula that results when the following pairs of ions combine to form an ionic bond. a. Sr2+ and 02- b. Mn4+ and O2- C. Lil+ and CI- d. Cs1+ and S2-
1. Which of the following paired atoms 1 point is non-polar? * a. Br-F b. H-CI c. H-F d. H-P 2. Which of the following bonds has the highest polarity? * a. N-H b. C-H c. N-H d. C-O 3. Which of the following bonds has the lowest polarity? * a. N-H b. C-O c. C-H d. O-H 4. Which of the following is the correct decreasing electronegativity values? * a. F, O, N, C b. CI, S, Si, P c. As, Se, Br, F Od. H, Si, P, S 5. Which molecule has an ionic bond? а. Н-F b. Na-F c. F-F d. Cl-F 6. Which best describe the shape and 1 point polarity of CH4? * a. Tetrahedral polar b. Linear non-polar c. Tetrahedral non-polar d. Linear polar 7. Which statement is true about the non-polar molecules? * a. They are symmetric. b. They are asymmetric. c. They have lone pair on the central atom. d. They have charges 8. If a molecule has this symbol -, it means a. Negative b. Neutral C. Positive d. Cancel out 9. If a molecule has this symbol +, it means a. Charge b. Positive c. Negative d. Neutral 10. If a molecule…
Indicate whether each statement below is true or false. a. The core electrons are called valence electrons. b. lonic bonds are formed by the attraction between cations and anions. c. Ionic bonds are formed from atoms by a transfer of electrons. d. In a Lewis symbol, the chemical symbol represents the nucleus of the atom. e. An ion written as a Lewis symbol has brackets outside the electrons. f. Two electrons involved in a bond produce a double bond. g. If the AEN value is very large the bond is polar covalent. h. The central atom is typically the atom with the highest electronegativity. i. An expanded octet has larger electron clouds. j. A nonpolar molecule can have polar bonds.
Which of the following represents a non-polar covalent bond? a. H-O b. C-N c. C-C d. Li-F e. S-O Based on electronegativities, which of the following would you expect to be most ionic? a. N2 b. CaF2 c. CO2 d. CH4 e. CF4 Which element is the least electronegative? a. Calcium b. Cesium c. Iron d. Barium e. Potassium
9. Indicate whether each statement below is true or false. d. In a Lewis symbol, the chemical symbol represents the nucleus of the atom. e. An ion written as a Lewis symbol has brackets outside the electrons. f. Two electrons involved in a bond produce a double bond.
1. Which statement about chemical bonds is true? a. It is an electrostatic attraction that holds two atoms together.b. It involves the combination of two nuclei of different atoms.c. It involves the temporary attraction between two or more substances.d. It deals with the physical separation of substances to form another set of substances. 2. Which Lewis electron-dot diagram represents a rubidium atom? a. Rb•b. :Rb•c. Rb:d. •Rb• 3. The bond between Br atoms in a Br2 molecule is _______ and is formed by the _________ of two valence electrons. a. ionic ; sharingb. ionic ; transferc. covalent ; sharingd. covalent; transfer
Part II Practicing Coordinate Covalent Bonding for Molecular compounds. Example: Given the molecular compound SO, draw the molecular compound using the coordinate covalent bonding model. A. Calculate the total number of electrons. S = 1x 6 = 6 electrons O = 4 x 6 = 24 electrons Charge -2 = 2 electrons Total = 32 electrons B. Determine Center Atom (look for the single element) in this case S. C. Now make a single bond to all other elements to the central atom. You have used 8 electrons of the 32. 0- D. Place electrons around the atoms that are bonded to the central atom so that each will have 8 electrons around them (in this case each oxygen needs 6 more electrons or 3 pairs of electrons). : E. Make sure that the central atom has a full octet (8 electrons). In this case it does, so you are done. If not, one of the lone pairs of electrons from an outer atom will share a second pair of electrons with the center atom. Finally be sure that you have used all your electrons and NO MORE!
1. Write the Lewis symbol for each atom or ion below. a. carbon b. nitrogen with -3 charge С. C. potassium with +1 charge d. sulfur
The Lewis structure shown below is not a valid Lewis structure. What statement best describes the error in the structure? :Cl-N=N-Ci: :15: :5: O A. The chlorine atoms violate the octet rule. D B. The structure contains an incorrect number of valence electrons. DC. The nitrogen atoms violate the octet rule. D D. Chlorine atoms and nitrogen atoms do not typically form bonds with each other.
1. It is an electrical attraction between the nuciei and valence electrons of an atom and which bind atoms together. 2. A type of bond which results from the transfer of one or more valence electrons from one atom t another. 3. It is a bond in which the electrons are equally shared by bonded atoms. 4. It is a bond in which the bonded atoms have an unequal sharing of electrons. S. It is a measure of the tendency of an atom to attract electrons toward itself. 6. These are forces of attraction that exist between the molecules that comprise matter. 7. These are intermolecular forces of attraction acting on polar molecules. 8. It is a cpecial type of diņale-dipale interaction when a hydrogen atom bonded ta a highly electronegative atom is attracted to an unshared pair of electrons of an electronegative atom of another molecule. 9. These forces result from the constant movement of electrons in molecules, whích consequently creates instantaneous dipoles. I. Write T if the answer is true and F…
Draw the Lewis Dot Symbol for each element i.) S J.) P K.) C L.) Mg M.) K N.) Ar O.) N

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