Mcmurry Oc8e Ev Ch01
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Transcript of Mcmurry Oc8e Ev Ch01
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7/27/2019 Mcmurry Oc8e Ev Ch01
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Chapter 1Structure and Bonding
SHORT ANSWER
1. Give the ground-state electron configuration for carbon (atomic number 6).
ANS:1s22s22px
12py1or 1s22s22p2
2. Give the ground-state electron configuration for fluorine (atomic number ).
ANS:
1s22s22px22py
22pz1or 1s22s22p!
".Give the ground-state electron configuration for magnesium (atomic number 12).
ANS:
1s22s22p6"s2
#. $o% man& electrons does silicon have in its valence shell'
ANS:
four
Exhibit 1-1
rite valid e%is (electron-dot) structures for each formula belo%. Sho% all electrons as dots and sho%
all non-bonding electrons.
!. *2*l# tetrachloroeth&lene
ANS:
6. *+2 carbon dio,ide
ANS:
. *$#+ methanol
1
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Structure and Bonding
ANS:
Exhibit 1-2
*onsider the structure of urea sho%n belo% to ans%er the follo%ing /uestion(s).
0. efer to ,hibit 1-2. 3ill in an& non-bonding valence electrons that are missing from the line-bond
structure.
ANS:
. efer to ,hibit 1-2. 4he carbon atom in urea is:
sp"h&bridi5edsp2h&bridi5ed
sph&bridi5ed
not h&bridi5ed
ANS:
b
1. efer to ,hibit 1-2. 4he 7redicted N$2*8+ bond angle in urea is:
1.!
12
10
not 7redictable
ANS:b
2
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*ha7ter 1
Exhibit 1-
9etermine the h&bridi5ation for the indicated atoms in each structure belo%.
11. efer to ,hibit 1-". 4he h&bridi5ation of this o,&gen atom (A) is .
ANS:
sp2
12. efer to ,hibit 1-". 4he h&bridi5ation of this o,&gen atom (B) is .
ANS:
sp"
1". efer to ,hibit 1-". 4he h&bridi5ation of this carbon atom (C) is .
ANS:
sp"
1#. efer to ,hibit 1-". 4he h&bridi5ation of this carbon atom (!) is .
ANS:
sp
1!. 4he molecular formula *2$#+ can be converted into three-line bond (;e
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Structure and Bonding
16. 4he original /uestion %as combined %ith @1!. 4his 7laceholder /uestion is here to maintain the
integrit& of the numbering s&stem bet%een the 7rinted co7& and ,amie%. 4herefore it has been
mar
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*ha7ter 1
Exhibit 1-"
Fro7ose 7ossible structures for a molecule that meets each of the follo%ing descri7tions.
1. efer to ,hibit 1-#. *ontains t%osp"h&bridi5ed carbons and t%osph&bridi5ed carbons.
ANS:
2. efer to ,hibit 1-#. *ontains onesp"h&bridi5ed carbon and t%osp2h&bridi5ed carbons.
ANS:
21. *onvert the follo%ing molecular model into a condensed structure and a s
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Structure and Bonding
ANS:
2". *onvert the follo%ing molecular model into a condensed structure and a s
2#. ?ndicate the h&bridi5ation on each of the carbon atoms indicated %ith a number in the molecularmodel sho%n.
ANS:
*arbon 1: sp"
*arbon 2: sp2
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*ha7ter 1
2!. 9ra% the orbital diagram sho%ing the ground-state electron configuration of sulfur.
ANS:
26. 3ill in an& nonbonding valence electrons that are missing from the follo%ing structural
re7resentation of the amino acid c&steine.
ANS:
2. 4here are t%o substances %ith the molecular formula *2$N. 9ra% them and describe ho% the&
differ.
ANS:
4he t%o structures differ in the number of h&drogen atoms and carbon atoms bonded to the nitrogenatom. 4he first structure contains the carbon atoms bonded in a t%o carbon chain %hile in the second
structure the t%o carbons atoms are isolated from each other b& the nitrogen atom.
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Structure and Bonding
#$%T&'%E CHO&CE
1. +verla7 of the t%o atomic orbitals sho%n could result in a:
bond
bond
or de7ending on the direction of the overla7.
ANS: *
2. $&bridi5ation of the atomic orbitals sho%n %ould result in:
sp"h&bridi5ation
sp2
h&bridi5ationsph&bridi5ation
ANS: E
". hich of the follo%ing re7resents a h&brid orbital'
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*ha7ter 1
ANS: 9
#. hat t&7e of h&bridi5ation is e,hibited b& carbon in the follo%ing substance':
sp"h&bridi5ation
sp2h&bridi5ation
sph&bridi5ation
ANS: E
!. hat t&7e of h&bridi5ation is e,hibited b& carbon in the follo%ing substance':
sp"h&bridi5ationsp2h&bridi5ation
sph&bridi5ation
ANS: *
6. hat t&7e of h&bridi5ation is e,hibited b& the nitrogen atom in the follo%ing substance and ho%
man& lone 7airs are 7resent on the nitrogen':
sp"h&bridi5ation and 1 lone 7air
sp2h&bridi5ation and l lone 7airsph&bridi5ation and 1 lone 7air
sp"h&bridi5ation and 2 lone 7airs
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Structure and Bonding
sp2h&bridi5ation and 2 lone 7airs
sph&bridi5ation and 2 lone 7airs
ANS: A
. ?f all the missing bonds in the follo%ing structure are sigma bonds to h&drogen atoms ho% man&
h&drogen atoms are missing from this structure' Atoms other than carbon are labeled.
112
1#None of these is the correct number.
ANS:
1