Study

Chemical Bonds HL

  •   0%
  •  0     0     0

      Back   Restart
  • Which of the following has a pure covalent bond?
    H2
    CO2
    CCl4
    H2O
  • Give at least 2 (two) ways to refer to this adorable looking allotrope of carbon
    any 2: Bucky ball OR C-60 OR fullterene OR buckminsterfullerene
  • In paper chromatography, components of a mixture are separated according to which property?
    Solubility
    Melting point
    Intramolecular forces
    Electronegativity
  • Which of the molecules obeys the octet rule?
    BH3
    NO2
    O3
    PCl5
  • What is the electron and molecular geometry for carbon dioxide. From this data, is it polar?
    Electron: linear. Molecular: linear. - It is symmetric therefor NOT POLAR
  • Which series shows the correct order of metallic bond strength from strongest to weakest?
    Rb > K > Na > Mg
    Na > K > Rb > Mg
    Mg > Na > K > Rb
    Mg > Rb > K > Na
  • What name is given to a compound composed of two non-metals?
    Polyatomic ions
    Alloy
    Ionic
    Molecular
  • What is the sum of the charges in a compound?
    0
  • Which compound has the shortest C–N bond?
    CH3NH2
    CH3CN
    CH3CHNH
    (CH3)3CNH2
  • A trigonal bipyramidal molecule contains what hybridization
    sp
    sp3
    sp2
    dsp3
  • What is the electron geometry, molecular geometry and bond angles in PF3. Is it polar?
    electron = tetrahedral; molecular = trigonal pyramidal. angles - <109.5; polar
  • Which of the following is the definition of an allotrope?
    Different states of a compound
    The same chemical formula but a different structure
    2 or more different physical forms in which an element exist
    Different numbers of neutrons but same protons
  • Why is CHCl3 more polar than CCl4?
    CCl4 is symmetric and therefore no net dipole; CHCl3 is asymmetric
  • What is the formula for the compound formed when a potassium ion(K+) and a sulfide ion (S-2) unite?
    K2S
  • Which hybridization is being depicted in this valence electron configuration shown here?
    sp2
  • What is the chemical formula for diamond?
    C(s)
  • Which of the following would you expect to have the highest melting point?
    hydrogen chloride
    dinitrogen oxide
    phosphorous trichloride
    magnesium fluoride
  • Charlie claims that a single sodium ion and a single oxygen ion do not bond together to form a stable binary ionic compound. Is he correct? You must explain completely
    Charlie is correct. The sum of the charges of the two ions must be zero in order for them to form a stable ionic compound.
  • Why do ionic solids NOT conduct electricity?
    This is due to the fact that ions are not free to move in a solid as they are arranged in an ionic lattice.
  • Which of the following best describes the changes that Which of the following best describes the changes that occur in the forces of attraction between CO2 molecules as they change phase from a gas to a solid?
    London (dispersion) forces operate to form the solid
    Ionic bonds between CO2 molecules are formed
    CO2 molecules crystallize around a nucleation point
    C-O bonds are formed
  • Name all the intermolecular forces in HCl
    dipole-dipole and LDF only
  • Covalent bonds take place between
    two nonmetals
  • Which statements regarding alloys are correct?
    II and III only
    I and III only
    I and II only
    I, II and III
  • Which compound contains both ionic and covalent bonds?
    SiH4
    Na2O
    NaNO3
    H2CO
  • The hybridization of I in IF4– is
    dsp3
    sp3
    d2sp3
    sp2
  • What is the chemical formula for the compound barium bromide?
    BaBr2
  • Unknown element W has 2 valence electrons. Unknown element X has 7 valence electrons. Which formula shows the most likely outcome when elements W and X react?
    WX2
  • What would be the best use of graphite?
    electrode
    used in drill heads
    lubricant because it is soft and slippery with weak forces
    decorative stone for rings
  • Consider the skeletal structure shown below: N—C—C—N Draw the Lewis structure and answer the following: How many of the atoms are sp hybridized?
    1
    3
    4
    2
  • What is the formula for the compound formed when aluminum ions(Al 3+) and chloride ions (Cl -) unite?
    AlCl3
  • what is the bond order of carbonate ion?
    1.67
    1.33
    1.25
    1.5
  • What is the suffix for all binary ionic compounds of representative elements?
    -ide
    -gen
    -ite
    -ate
  • How many covalent bonds does graphite have?
    3
  • What is the molecular geometry of the carbonate ion? What would be the angles?
    trigonal planar; 120 degrees
  • Which hybridization is depicted in the molecule shown here?
    sp3
  • In the molecule C2H4 the valence orbitals of the carbon atoms are assumed to be
    sp3 hybridized
    not hybridized
    sp hybridized
    sp2 hybridized
  • A chemical formula includes the symbols of the elements in the compound and subscripts that indicate
    the number of atoms or ions of each type
  • The molecule of oxygen contains one σ and one π bond. How do p orbitals in the O atoms overlap to produce the π bond?
    End-to-end overlap results in high electron density along th
    Sideways overlap results in high electron density above and
    End-to-end overlap results in high electron density above an
    Sideways overlap results in high electron density along the
  • What is the metallic ion in the compound CuCl2?
    Cu2+
  • In the formation of the compound of sodium chloride
    a sodium atom donates an electron to a chlorine atom
  • Atoms with greatly different electronegativity values are expected to form
    double bonds
    triple bonds
    no bonds
    ionic bonds
  • The Lewis (electron dot) structure of the ethanedioate ion is shown. Outline why all the C–O bond lengths in the ethanedioate ion are the same length
    electrons delocalized «across the O–C–O system» or RESONANCE
  • How is the electron domain geometry of ammonia related to the hybridization of the N atom?
    sp2 hybridization produces a tetrahedral electron domain
    sp3 hybridization produces a tetrahedral electron domain
    sp3 hybrid produces a trigonal pyramidal electron domain
    sp2 hybrid produces a trigonal pyramidal electron domain
  • In the cyanide ion (CN–), the nitrogen has a formal charge of
    -1
    +2
    0
    -2
  • What is the name of the compound Ni(NO3)2
    Nickel (II) nitrate
  • Name
    calcium phosphate [OR calcium phosphate (V)]
  • what is the formula of aluminum carbonate?
    Al2(CO3)3
  • Which hybridization is depicted in the molecule shown here?
    sp
  • What is the name of the compound SrSO4
    strontium sulfate
  • The hybridization of the central atom in XeF5+ is:
    sp2
    dsp3
    d2sp3
    sp3
  • A white solid has a melting point of 2072   ∘ C 2072 ∘ C. It does not conduct electricity in the solid state, but does so in the molten state. Which type of structure is found in the solid material?
    giant molecular
    simple molecular
    ionic
    metallic
  • Which of the following molecules contains a double bond?
    ammonia
    water
    hydrogen fluoride
    carbon dioxide
  • Which of the following does NOT hydrogen bond?
    CH3OH
    HF
    CH3NH2
    CH3F
  • Which intermolecular force does NOT exist when KF is dissolved in NH3?
    dipole-dipole
    hydrogen bond
    ion-induced dipole
    ion-dipole
  • In the gaseous phase, which of the following diatomic molecules would be the most polar?
    CsCl
    CsF
    NaCl
    LiF
  • What is the chemical formula for calcium oxide?
    CaO
  • a) what is the hybridization of bonds? b)What is the bond order?
    electron and molecular geometry is trigonal planar. It is sp2 hybridized and it has a bond order of 1.33
  • Which of the following would you expect to have the highest melting point?
    bromine
    fluorine
    chlorine
    iodine
  • Which pairs of words correctly completes the statement? Ionic compounds form when____ and _____ react.
    metals ; nonmetals
  • In which pair do both compounds exhibit predominantly ionic bonding?
    SCl4 and HF
    Na2SO3 and NH3
    RbCl and MgS
    BaF and H2O
  • Which of the following molecules has a dipole moment?
    NF3
    F2
    SiH4
    BCl3
  • State the intermolecular forces present in all of the halogens in their standard states.
    London Dispersion Forces (Dispersion forces)
  • Calcium (Ca) is in the second column of the periodic table and is classified as an alkaline earth metal. Which of the following formulas shows the ratio of a compound formed from calcium and iodine(I)?
    CaI2
  • What is the electron and molecular geometry of chlorate ion? Is it polar?
    Electron: tetrahedral. Molecular : Trigonal pyramidal. : It is polar because it is both asymmetric and it is an anion. (draw please w lone pair on chlorinei
  • What will the result be when a reaction between bismuth and fluorine takes place?
    BiF3
  • What is the arrangement of the bonds in diamond as shown in this structure?
    tetrahedral - (4 bonds each 109.5 degrees apart)
  • What is the formula for the compound potassium sulfate?
    K2SO4
  • Best explanation here that graphite is softer than diamond
    layers can slide/move
    graphite is in a tetrahedral arrangement
    the carbons have 4 bonds
    every carbon atom has a strong bond to the other
  • How many resonance structures are there of ozone?
    2
    3
    1
    4
  • What do sodium ions have in common with chloride ions?
    they are both cations
    they both form covalent bonds
    they are both anions
    they both have the same sized charge
  • A trigonal planar molecule contains what hybridization
    sp2
    dsp3
    sp
    sp3
  • Which rule must be fulfilled by sharing or transferring electrons to create bonds in order for an element to be stable?
    octet rule
  • Which molecule is most polar?
    CCl 4
    CClF 3
    CHF 3
    CF 4
    • Your experience on this site will be improved by allowing cookies.