Concept explainers
a) Acrylonitrile, C3H3N, which contains a carbon-carbon double bond and a carbon- nitrogen triple bond.
Interpretation:
Structure of acrylonitrile, C3H3N, with a carbon-carbon double bond and a carbon- nitrogen triple bond along with lone pair of electrons is to be drawn.
Concept introduction:
A covalent bond is formed by mutual sharing of two electrons between the atoms, each atom giving one electron for sharing. Such a covalent bond, that is, a pair of shared electrons is represented as a line between the atoms, for example as A-B. The number of covalent bonds formed by an atom depends on the number of electrons that the atom requires for making the octet in its valence shell. Valence electrons that are not used for bonding are called lone-pair of electrons or nonbonding electrons.
Answer to Problem 33AP
Structure of acrylonitrile, C3H3N.
Explanation of Solution
Structure of acrylonitrile, C3H3N, with a carbon-carbon double bond and a carbon- nitrogen triple bond along with lone pair of electrons is required. Carbon with four valence electrons can form four covalent bonds. Nitrogen with five valence electrons can form three covalent bonds while hydrogen with one valence electron an form one covalent bond. There are three carbons in acrylonitrile molecule. Two carbons are joined by a double bond and the third carbon is involved in forming triple bond with nitrogen and a single bond with second carbon. Out of the five valence electrons available, nitrogen has utilized only three electrons in forming the triple bond. Therefore a lone pair of electron remains on nitrogen. The hydrogen atoms are distributed on different carbon atoms depending upon their valence requirements giving the structure as
Structure of acrylonitrile, C3H3N, with a carbon-carbon double bond and a carbon- nitrogen triple bond along with lone pair of electrons.
b) Ethyl methyl ether, C3H8O, which contains an oxygen atom bonded to two carbon atoms
Interpretation:
Structure of ethyl methyl ether, C3H8O, which contains an oxygen atom bonded to two carbon atoms along with lone pair of electrons is to be drawn.
Concept introduction:
A covalent bond is formed by mutual sharing of two electrons between the atoms, each atom giving one electron for sharing. Such a covalent bond, that is, a pair of shared electrons is represented as a line between the atoms, for example as A-B. The number of covalent bonds formed by an atom depends on the number of electrons that the atom requires for making the octet in its valence shell. Valence electrons that are not used for bonding are called lone-pair of electrons or nonbonding electrons.
Answer to Problem 33AP
Structure of ethyl methyl ether, C3H8O, which contains an oxygen atom bonded to two carbon atoms along with lone pair of electrons is
Explanation of Solution
Structure of ethyl methyl ether, C3H8O, with an oxygen atom bonded to two carbon atoms along with lone pair of electrons is required. Carbon with four valence electrons can form four covalent bonds. Oxygen with six valence electrons can form two covalent bonds while hydrogen with one valence electron an form one covalent bond. There are three carbons in ethyl methyl ether molecule. Since the oxygen atom is bonded to two carbon atoms, the third carbon must be attached to any one of the carbons bonded to oxygen atom. Hence the skeleton structure of ethyl methyl ether will be C-C-O-C. Out of the six valence electrons available, oxygen has utilized only two electrons in forming the bonds. Therefore two lone pairs of electrons remain on oxygen atom. The hydrogen atoms are distributed on different carbon atoms depending upon their valence requirements giving the structure as H3C-CH2-O-CH3.
Structure of ethyl methyl ether, C3H8O, which contains an oxygen atom bonded to two carbon atoms along with lone pair of electrons is
c) Butane, C4H10, which contains a chain of four carbon atoms.
Interpretation:
Structure of butane, C4H10, which contains a chain of four carbon atoms along with lone pair of electrons is to be drawn.
Concept introduction:
A covalent bond is formed by mutual sharing of two electrons between the atoms, each atom giving one electron for sharing. Such a covalent bond, that is, a pair of shared electrons is represented as a line between the atoms, for example as A-B. The number of covalent bonds formed by an atom depends on the number of electrons that the atom requires for making the octet in its valence shell. Valence electrons that are not used for bonding are called lone-pair of electrons or nonbonding electrons.
Answer to Problem 33AP
Structure of butane, C4H10.
Explanation of Solution
Structure of butane, C4H10, which contains a chain of four carbon atoms along with lone pair of electrons is
d) Cyclohexene, C6H10, which contains a ring of six carbon atoms and one carbon-carbon double bond.
Interpretation:
Structure of cyclohexene, C6H10, which contains a ring of six carbon atoms and one carbon-carbon double bond along with lone pair of electrons is to be drawn.
Concept introduction:
A covalent bond is formed by mutual sharing of two electrons between the atoms, each atom giving one electron for sharing. Such a covalent bond, that is, a pair of shared electrons is represented as a line between the atoms, for example as A-B. The number of covalent bonds formed by an atom depends on the number of electrons that the atom requires for making the octet in its valence shell. Valence electrons that are not used for bonding are called lone-pair of electrons or nonbonding electrons.
Answer to Problem 33AP
Structure of cyclohexene, C6H10, which contains a ring of six carbon atoms and one carbon-carbon double bond.
Explanation of Solution
Structure of cyclohexene, C6H10, with a ring of six carbon atoms and one carbon-carbon double bond along with lone pair of electrons is required. Carbon with four valence electrons can form four covalent bonds while hydrogen with one valence electron an form only one covalent bond. The carbons are to be arranged in the form a ring with two carbons attached through a double bond and two single bonds and others through four by single bonds. The ten hydrogen atoms are distributed on these six carbons satisfying their valence requirements. Thus no lone pair of electrons remains on either carbon or hydrogen. The structure of cyclohexene is
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Chapter 1 Solutions
Organic Chemistry
- The arrangement of atoms in several biologically important molecules is given here. Complete the Lewis structures of these molecules by adding multiple bonds and lone pairs. Do not add any more atoms. (a) the amino acid serine: 車 0-H H-C-H H Н—N—с—с—о—н H (b) нон H-N-C-N-H (c) pyruvic acid: ноо н—с—с—с—о—н H. (d) uracil: H (e) carbonic acid: H-0-C-0-Harrow_forwardDraw the shapes of the following molecules and ions in 3-dimension. Show clearly any lone pairs of electrons on the central atom, state the number of bond pairs and lone pairs of electrons on the central atom and name the shape of the molecule or ion. (a) SiCI4, silicon tetrachloride (b) PBr3, phosphorus tribromide (c) CI2O, dichlorine oxide Provide everything stated in the instructions for each compound.arrow_forwardDraw the molecules in Problem 1.61 using line structuresarrow_forward
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- Which of the following bonds is the shortest in length? (a) C-O (b) C-Si (c) 0=0 (d) C-Brarrow_forwardThe Lewis structures of acetone and n-propane is shown below, which of the following is true? (A) I is polar and II is nonpolar (B) I is nonpolar and II is polar (C) Both I and II are nonpolar (D) Both I and II are polararrow_forwardDraw a Lewis Structure for each of the following species and assign formal charge where appropriate. Using electronegative values from the period table that was provided identify polar covalent bonds and label the atoms δ+ and δ−. For each of the molecules indicate whether or not it has a dipole moment. (a)CH5N (b) HCN (c) H2CO (d) CH3NC(e) CH3SOCH3 (f) H6BNarrow_forward
- 3-109 Until several years ago, the two chlorofluorocarbons (CFCs) most widely used as heat transfer media in refrigeration systems were Freon-li (trichloro fluoromethane, CC13F) and Freon-12 (dichiorodi fluoromethane, CCl2F2). Draw a three-dimensional representation of each molecule and indicate the Direction of it.s polarity.arrow_forwardThere are 3 isomers of dichlorobenzene, and they are shown below. Which is/are non-polar? Note: Answer A is supposed to be (III Only)arrow_forward3.72 (*) Identify the mistakes contained within the following structures. (ર) (b) (c) + +arrow_forward
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