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WorksheetsLewis structures of molecules
Total questions: 18
Worksheet time: 54mins
According to the octet rule, most elements need _______ valence electrons.
2
8
6
18
Hydrogen needs _____ electrons to be stable.
4
6
8
2
If electrons are shared unequally then the bond is ___.
non-polar covalent
ionic
non-polar ionic
polar covalent
If electrons are shared equally, the bond is ____.
non-polar covalent
ionic
non-polar ionic
polar covalent
In a covalent bond, where do the bonding electrons spend most of their time?
between the nuclei
in the nuclei
radiating away from the nuclei
equally distributed around the nuclei
Which of the following is the correct Lewis dot structure for a molecule of fluorine, F2?
When drawing Lewis structures, only __________ electrons are used.
inner shell
core
valence
stable
Each line in a Lewis structure represents __________ electron(s).
3
2
1
4
What is the correct Lewis structure for ammonia, NH3?
Which is the correct Lewis structure for carbon dioxide?
How many total lone pairs (unshared pairs) are present in a Lewis structure for carbon dioxide, CO2?
(Hint: draw a Lewis structure)
0
1
2
3
4
How many lone pairs (unshared pairs) are present in a molecule of ammonia, NH3?
(Hint: draw a Lewis structure)
0
1
2
3
What is the total number of valence electrons in the Lewis structure of the NO2- polyatomic ion?
8
18
18
24
CHCl3 has how many double bonds?
0
1
2
3
Is this a valid Lewis structure for CH2O?
Yes
No
Which of the following is a valid Lewis structure for CH3Cl?
Three pairs of electrons are shared in a ____.
single bond
double bond
triple bond
Which of the following is a valid Lewis structure for hydrogen cyanide, HCN?
