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Covalent Bonding II
Test Description: More review!!
Instructions: Answer all questions to get your test result.
1) Which elements can form diatomic molecules joined by a single covalent bond?
A
hydrogen and the halogens only
B
halogens only
C
halogens and members of the oxygen group only
D
hydrogen only
2) A molecule with a single covalent bond is
A
Cl2
B
N2
C
CO2
D
CO
3) In which of the following compounds is the octet expanded to include 12 electrons?
A
PCl3
B
H2S
C
SF6
D
PCl5
4) Which of the following bonds is most polar?
A
H-H
B
H-Si
C
H-P
D
H-Cl
5) What property determines how much negative charge an element will have in a covalent bond with hydrogen?
A
electronegativity
B
ionization energy
C
atomic radius
D
melting point
6) What is the shape of a water molecule?
A
linear
B
trigonal planar
C
bent
D
tetrahedral
7) How many bonds can carbon form?
A
3
B
2
C
4
D
1
8) Which of the following compounds will undergo hydrogen bonding?
A
NaH
B
NH3
C
H2S
D
CH4
9) Which of the following intermolecular forces is the strongest?
A
dipole interactions
B
dispersion forces
C
covalent attraction
D
hydrogen bonding
10) Which of the following types of solids has the highest melting point?
A
nonmetals
B
ionic solid
C
network solid
D
metals
*select an answer for all questions
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