Which of the following has primarily ionic bonding? - ANS Na2O
Which atom is more electronegative, oxygen or boron? Use the atomic symbol for your answer. - ANS O
Which atom is more electronegative, oxygen or bromine? Use the atomic symbol for your answer. - ANS O
Which of the following has nonp...
which of the following has primarily ionic bonding
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CHEM 1301 (CHEM1301)
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CHEM 1301 Exam 3 with Q&A
Which of the following has primarily ionic bonding? - ANS Na2O
Which atom is more electronegative, oxygen or boron? Use the atomic symbol for your
answer. - ANS O
Which atom is more electronegative, oxygen or bromine? Use the atomic symbol for
your answer. - ANS O
Which of the following has nonpolar bonds? - ANS O2
In which of the following bonds would the silicon atom be the slightly positive one? -
ANS Si-C
A sulfur atom needs to gain _____ electrons to achieve a noble gas configuration. -
ANS 2
The formula of aluminum oxide is Al2O3 What is the formula of the ionic compound
containing aluminum and sulfate ions? - ANS Al2(SO4)3
Which of the following has the largest radius? - ANS S2-
(Biggest negative)
Draw the Lewis structure of CH4. How many double bonds are there? - ANS 0
How many dots should be drawn in the Lewis Dot Structure of HCl? - ANS 8
Which of the following has primarily ionic bonding?
A. Na2O
B. N2O3
C. none of these
D. CCl4
E. CO2 - ANS Na2O
The least electronegative element of those listed is
A. O
B. Pb
C. Se
D. Cu
E. Ba - ANS Ba
(Most left)
Which of these atoms is the most electronegative, oxygen or nitrogen or sulfur? Enter
the atomic symbol for your answer. - ANS O
In a phosphorous-chlorine bond, the bond is _____ and the _____ atoms bears _____
charge
A. nonpolar, Cl, no partial
B. polar, P, a partial negative
C. nonpolar, P, no partial
D. polar, P, a partial positive
E. polar, Cl, a partial positive - ANS polar, P, a partial positive
Which is the correct order of decreasing bond polarity?
A. F-F > F-O > F-C
, CHEM 1301 Exam 3 with Q&A
B. F-C > F-F > F-O
C. F-C > F-O > F-F
D. F-O > F-C > F-F
E. F-O > F-F > F-C - ANS F-C > F-O > F-F
1s22s22p63s23p6 is the electron configuration for which one of the following ions?
A. Ca2+
B. none of these
C. F-
D. S-
E. Na+ - ANS Ca2+
Predict the product formed when calcium, Ca, combines with phosphorus?
A. CaP
B. Ca2P
C. CaP2
D. Ca2P3
E. Ca3P2 - ANS Ca3P2
Which of the following ions has the smallest radius?
A. F-
B. Cl-
C. Br-
D. Ar
E. Ca2+ - ANS Ca2+
(Biggest positive)
Draw the Lewis structure of NH3. How many double bonds are there? - ANS 0
Draw the Lewis structure of BH3. How many single bonds are there? - ANS 3
Arrange the following types of electromagnetic radiation in order of increasing
wavelength:
A.radio waves < microwave < infrared < visible < ultraviolet < x-ray
B.microwave < ultraviolet < radio waves < infrared < x-ray < visible
C x-ray < ultraviolet < visible < infrared < microwave < radio waves
D. visible < x-ray < microwave < ultraviolet < radio waves < infrared
E. None of these - ANS C. x-ray < ultraviolet < visible < infrared < microwave < radio
waves
Which color of visible light has the most energy per photon?
A. violet
B. green
C. yellow
D. blue
E. red - ANS A. violet
Which statement is not true of Bohr's model of the atom?
A. Bohr's model correctly described the atomic spectra of H and He but failed for other
atoms
B. An electron does not radiate energy while in a stationary state.
C. An electron can move to a different orbit only by absorbing or emitting a photon.
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