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BONDING REVIEW You need a Periodic Table, Electronegativity table & Polarity chart!
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What is the correct bond angle for “Bent” – with 2 lone pairs on the central atom? 105
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What is the predicted bond angle for the following compound? 109.5
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Write the electron dot notation for sulfur. S
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How many valence electrons does CO 3 -2 have? 24
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When predicting bond types, list the range for ionic. 1.7 and higher
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What type of melting & boiling points do molecular compounds have? Low melting & boiling points
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Are the IM forces (strong or weak) in ionic compounds? Strong
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Where are valance electrons found? Outermost energy level
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What is an isomer? Compounds with the same molecular formula, but different structural formulas
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______ is the measure of the ability of an atom to attract electrons. Electronegativity
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A(n) __________ compound requires less energy (lower temp.) to break weak IM forces between particles Molecular
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A single bond is a covalent bond produced by the sharing of _____pair of electrons between two atoms one
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Assign partial charges for the following pair of atoms: N and O N-O Note: O gets the – b/c it has a higher electronegativity value!
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_______ are forces of attraction between adjacent particles (molecules, atoms, or ions) Intermolecular Forces
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What is the predicted bond angle for the following compound? 180
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What is the molecular geometry of the following?: Trigonal planar
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A chemical bond resulting from electrostatic attraction between positive and negative ions is a(n) _______ IONIC BOND
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What is the predicted bond angle for the following compound? 120
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What is the probable bond type for K and F? 0.8-4.0 = 3.2 difference so it’s IONIC
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What is the correct bond angle for “tetrahedral”? 109.5
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How many valence electrons does NH 4 +1 have? 8
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Are the IM forces (strong or weak) in molecular compounds? Weak
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How many electrons does hydrogen need in order to be considered stable? 2
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________ is a covalent bond in which the bonding electrons are shared equally by the bonded atoms NONPOLAR covalent
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What are the following considered?: H 2, O 2, N 2, Cl 2, Br 2, I 2, and F 2 naturally occurring Diatomic molecules
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What is the predicted bond angle for the following compound? 120
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MgF 2 What is the ratio between the ions? 1Mg : 2 F
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A triple bond is a covalent bond produced by the sharing of _____pairs of electrons between two atoms THREE
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What is the molecular geometry of the following?: Tetrahedral
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When predicting bond types, list the range for polar covalent. 0.3-1.7
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What is the molecular geometry of the following?: Linear
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A - is assigned to the atom with the _______electronegativity Highest
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Ionic compounds contain what type(s) of element(s)? Metals and nonmetals
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A(n) __________ compound requires more energy (higher temp.) to break strong IM forces between particles Ionic
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What phase(s) of matter would you most likely find ionic compounds? SOLIDS
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________ is the simplest collection of atoms from which an ionic compound’s formula can be established Formula unit
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What is the molecular geometry of the following: Trigonal pyramidal
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What is the correct bond angle for “Bent” – with 1 lone pair on the central atom? 120
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Molecular substances usually involve only what type of elements? NONMETALS
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What type of melting & boiling points do ionic compounds have? High melting & boiling points
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Chemical compounds tend to form so that each atom (by gaining, losing, or sharing electrons) contains eight electrons in its outermost occupied main energy level is known as the _______________ Octet Rule
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Write the electron dot notation for lithium. Li
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What is the predicted bond angle for the following compound? 105
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What type of bond is illustrated in the picture? Polar Covalent Bond + + --
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__________are electrons involved in bonding. VALANCE Electrons
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_______ is a neutral group of atoms held together by covalent bonds Molecule
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What is the correct bond angle for “trigonal pyramidal”? 107
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What is the probable bond type for H and C? 2.1-2.5 = 0.4 difference so it’s POLAR COVALENT
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______ is a molecule containing only two atoms Diatomic molecule
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What is the correct bond angle for “trigonal planar”? 120
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_____ is an electron pair NOT involved in bonding Lone pair
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What is the molecular geometry of the following?: Bent
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______ is an electron pair involved in bonding Bond pair
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A double bond is a covalent bond produced by the sharing of _____pairs of electrons between two atoms TWO
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List the 3 elements that are exceptions to the octet rule. H, Be, B
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What phase(S) of matter would you find molecular substances? Solids, liquids, gases
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What two items needs to be added to the electron dot/structural formulas for polyatomic ions? BracketCharge
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What is the predicted bond angle for the following compound? 107
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When predicting bond types, list the range for nonpolar covalent. 0-0.3
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What is the correct bond angle for “linear”? 180
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_________ is a covalent bond in which the bonding electrons are shared unequally by the bonded atoms POLAR covalent
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What is the probable bond type for H and H? 2.1-2.1= 0 difference so it’s NONPOLAR COVALENT
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A chemical bond resulting from the sharing of electrons between two atoms is _______ Covalent Bond
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What type of bond is illustrated in the picture? Nonpolar Covalent Bond
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Use electron-dot formulas to illustrate the formation of ionic bonds involving Ca and F. Ca + F + F Ca +2 + F -1 + F -1 CaF 2
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Is this molecule Polar or Nonpolar? Cl 2 O You need to use your polarity chart! Polar
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Is this molecule Polar or Nonpolar? NCl 3 You need to use your polarity chart! Nonpolar
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