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Explain why it is unlikely that an organic molecule would have an odd number of valence electrons.

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In most molecules,the Lewis dot structur...

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Which property could describe a covalent compound?


A) It conducts electricity when melted.
B) It is a gas at room temperature.
C) It is composed of a non-metal and a metal.
D) It conducts electricity when dissolved in water.
E) none of the above

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A chemical bond formed when two atoms share six electrons is a ________ bond;it is best described as ________.


A) double;covalent
B) double;ionic
C) single;covalent
D) single;ionic
E) triple;covalent

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The covalent bonding model is most useful in describing which of the following compounds?


A) CoCl2
B) MgCl2
C) NiCl2
D) SCl2
E) none of the above

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Match the following. -sulfur dioxide


A) ICl
B) C Match the following. -sulfur dioxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
C) N Match the following. -sulfur dioxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
D) PC Match the following. -sulfur dioxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
E) Match the following. -sulfur dioxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I Match the following. -sulfur dioxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
F) CO
G) S Match the following. -sulfur dioxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
H) S Match the following. -sulfur dioxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
I) O Match the following. -sulfur dioxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
J) Br Match the following. -sulfur dioxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
K) CC Match the following. -sulfur dioxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
L) I Match the following. -sulfur dioxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I

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How many double bonds are there in a molecule of SF2?


A) 0
B) 1
C) 2
D) 3
E) 4

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Covalent compounds form distinct molecules,and therefore may exist as gases,liquids,or solids at room temperature,depending on the characteristics of the compound.

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Match the following. -carbon monoxide


A) ICl
B) C Match the following. -carbon monoxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
C) N Match the following. -carbon monoxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
D) PC Match the following. -carbon monoxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
E) Match the following. -carbon monoxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I Match the following. -carbon monoxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
F) CO
G) S Match the following. -carbon monoxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
H) S Match the following. -carbon monoxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
I) O Match the following. -carbon monoxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
J) Br Match the following. -carbon monoxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
K) CC Match the following. -carbon monoxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I
L) I Match the following. -carbon monoxide A) ICl B) C C) N D) PC E) F) CO G) S H) S I) O J) Br K) CC L) I

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Which element listed is the least electronegative?


A) nitrogen
B) hydrogen
C) oxygen
D) fluorine
E) chlorine

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A chemical bond formed between two identical atoms is a(an) ________ bond.


A) atomic
B) covalent
C) hydrogen
D) ionic
E) molecular

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A molecule in which the central atom forms three single bonds and has one lone pair is said to have a ________ shape.


A) bent
B) linear
C) planar
D) pyramidal
E) tetrahedral

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The formula for phosphorus pentafluoride is


A) PhF5.
B) PF5.
C) P5F.
D) (PF) 5.
E) P5F5.

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A molecule in which the central atom forms one double bond and two single bonds is said to have a ________ shape.


A) bent
B) linear
C) trigonal planar
D) pyramidal
E) tetrahedral

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Which of the following molecules has a CCH bond angle of 180°?


A) HCCH
B) H2CCH2
C) H3CCH3
D) H3CCHO
E) none of them

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A section of the Periodic Table containing main group elements is shown.Which bond would be least polar? A section of the Periodic Table containing main group elements is shown.Which bond would be least polar? A) WX B) YZ C) WZ D) WY E) cannot be determined without more specific information


A) WX
B) YZ
C) WZ
D) WY
E) cannot be determined without more specific information

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Draw the Lewis structure for CCl4.What is the molecular geometry of this compound? Is the molecule polar or nonpolar?

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blured image tetrahedr...

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A chemical bond formed when two atoms share two pairs of electrons is a ________ bond;it is best described as ________.


A) double;covalent
B) double;ionic
C) single;covalent
D) single;ionic
E) triple;covalent

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The VSEPR model of molecular structure requires a knowledge of ________ to predict the geometry of an atom in a molecule.


A) the number of atoms bonded to the atom of interest
B) the total number of atoms in the molecule
C) the number of electron pairs on the atom of interest
D) both A and C
E) none of the above

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The water molecule has a ________ geometry because its central atom has ________ bonds and ________ lone pairs of electrons.


A) bent;two;two
B) linear;two;two
C) pyramidal;three;one
D) tetrahedral;four;zero
E) planar triangular;three;one

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A chemical bond formed when two atoms share three pairs of electrons is a ________ bond;it is best described as ________.


A) double;covalent
B) single;covalent
C) triple;covalent
D) double;ionic
E) triple;ionic

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