CHEM 1020 FINAL PAPER 2026 COMPLETE
QUESTIONS AND ANSWERS GRADED A+
◉ Which of the following elements has 3 electrons in the valence
(outer) shell? Answer: B
◉ Which of the following would you expect to have ionic bonds?
Answer: CsF
◉ Which of the following would you expect to have polar covalent
bonds? Answer: NF3
◉ Which molecule has nonpolar covalent bonds? Answer: N2
◉ the number of electrons in the valence shell of sulfur is? Answer:
6
◉ oxygen is more electronegative than Answer: sulfur
◉ the most electronegative elements in the periodic table are
generally found Answer: toward the right in a horizontal row and
toward the top in a column
,◉ for carbon monoxide, O has a formal charge of Answer: +1
◉ what is the formal charge of N in HNO3? Answer: +1
◉ what is the percent s character in an sp2 hybridized orbital?
Answer: 33%
◉ the maximum number of electrons that a molecular orbital can
contain is Answer: 2
◉ the approximate H-C-H bond able in methane is Answer: 109.5
◉ the lewis structure of methane (sp3) Answer: tetrahedral
◉ acyclic Answer: containing no rings of atoms
◉ heterocyclic Answer: ring shaped carbon chain which has to have
at least one atom that isn't carbon in the ring
◉ what is the name of the alkane that has 3 carbon atoms? Answer:
propane
, ◉ which of the following would exhibit hydrogen bonding? Answer:
CH3OH
◉ the more carbons Answer: the higher the boiling point
◉ the boiling points of normal alkanes Answer: rise as the length of
the carbon chain increases and are higher than the boiling points of
branched alkanes with the same molecular formula
◉ the most stable conformation of propane is Answer: staggered
◉ the least stable conformation of propane is Answer: eclipsed
◉ what is the C-C-C bond angle of cyclobutane? Answer: 90 degrees
◉ benzonitrile Answer: benzene with a 3 (-) N
◉ What class of organic compounds result when cyclopentanone
reacts with ethylamine in the presence of trace acid? Answer: Imine
◉ what product results from the SN2 reaction between R-2-
chloropentane and hydroxide? Answer: S-2-pentanol
QUESTIONS AND ANSWERS GRADED A+
◉ Which of the following elements has 3 electrons in the valence
(outer) shell? Answer: B
◉ Which of the following would you expect to have ionic bonds?
Answer: CsF
◉ Which of the following would you expect to have polar covalent
bonds? Answer: NF3
◉ Which molecule has nonpolar covalent bonds? Answer: N2
◉ the number of electrons in the valence shell of sulfur is? Answer:
6
◉ oxygen is more electronegative than Answer: sulfur
◉ the most electronegative elements in the periodic table are
generally found Answer: toward the right in a horizontal row and
toward the top in a column
,◉ for carbon monoxide, O has a formal charge of Answer: +1
◉ what is the formal charge of N in HNO3? Answer: +1
◉ what is the percent s character in an sp2 hybridized orbital?
Answer: 33%
◉ the maximum number of electrons that a molecular orbital can
contain is Answer: 2
◉ the approximate H-C-H bond able in methane is Answer: 109.5
◉ the lewis structure of methane (sp3) Answer: tetrahedral
◉ acyclic Answer: containing no rings of atoms
◉ heterocyclic Answer: ring shaped carbon chain which has to have
at least one atom that isn't carbon in the ring
◉ what is the name of the alkane that has 3 carbon atoms? Answer:
propane
, ◉ which of the following would exhibit hydrogen bonding? Answer:
CH3OH
◉ the more carbons Answer: the higher the boiling point
◉ the boiling points of normal alkanes Answer: rise as the length of
the carbon chain increases and are higher than the boiling points of
branched alkanes with the same molecular formula
◉ the most stable conformation of propane is Answer: staggered
◉ the least stable conformation of propane is Answer: eclipsed
◉ what is the C-C-C bond angle of cyclobutane? Answer: 90 degrees
◉ benzonitrile Answer: benzene with a 3 (-) N
◉ What class of organic compounds result when cyclopentanone
reacts with ethylamine in the presence of trace acid? Answer: Imine
◉ what product results from the SN2 reaction between R-2-
chloropentane and hydroxide? Answer: S-2-pentanol
