Chemical Bonding
Question 1
Identify the type of bonding predominantly found in the following compounds.
-
BaO
Answer
A. Ionic
-
H2O
-
CO2
-
Fe2O3
-
SO3
Question 2
Which of the following species is isoelectronic.
Ba2+ and Ba
Al3+ and Ar
Cl - and Na+
B. Covalent
Sr2+ and Se2Question 3
Identify the following compounds as polar covalent, nonpolar covalent, or ionic
H2O
-
Answer
A. polar covalent
-
CO2
B. nonpolar covalent
C. ionic
-
NaI
-
NH3
-
CH4
Question 4
What is the relationship between Group (A) numbers (ie Group IA, Group IIA, etc) and the number of
valence electrons?
Question 5
Most elements are stable with eight (8) valence electrons: True or False.
Question 6
Elements react in order to gain, lose, or share electrons: True or False
Question 7
Ammonia (NH3) has _____ shared pairs of electrons and _____ unshared pair of electrons.
Question 8
Water (H2O) has _____ shared pairs of electrons and _____ unshared pairs of electrons.
Question 9
Which of the following has a double bond?
H2
O2
N2
none of these has a double bond
Question 10
Which of the following an ionic compound?
KI
CaCl2
H2O
more than one is ionic
Question 11
SiCl4 has ____ shared pairs of electrons, and _____ unshared pairs of electrons.
Question 12
How many dots would be shown in the Lewis symbol for phosporus. Use a number, not a word.
Question 13
What is the total number of valence electrons that must be shown in the Lewis structure for
magnesium fluoride? Use a number, not a word.
Question 14
Which particles play the most active role in chemical bonding?
Question 15
In a polar covalent bonding, electrons are:
Question 16
In a nonpolar covalent bonding, electrons are:
Question 17
In an ionic compound, the electrons are: