Bonding Review KEY
Part 1 - Complete each of the following sentences by filling in the appropriate word or phrase
from the list below.
negative
noble gas
octet
anion
positive
electrons
ions
cation
electron configuration
1. An ionic bond is an attraction between oppositely charged __Ions_.
2. Anions have a __Negative____ charge.
3. An atom becomes an ion by losing or gaining __electrons___.
4. The _octet___ rule states that atoms tend to gain, lose, or share electrons in order to acquire
a full set of valence electrons.
5. When sodium and chlorine form an ionic bond, both ions acquire the electron configuration of
a(n)
__noble gas__.
Write the Formula for the following Ionic Compounds:
a) Sodium Acetate
_______NaC2H3O2__________
b) Calcium Oxide
____CaO____________
c) Ammonium Phosphate
______(NH4)3PO4______________
d) Potassium Sulfate
______K2SO4______________
e) Barium Phosphate
______Ba3(PO4)2______________
f)
______Li3As_____________
Lithium Arsenide
g) Aluminum Sulfate
______Al2(SO4)3_________________
h) Sodium Phosphate
_____Na3PO4________________
i)
Ammonium Chloride
_____NH4Cl_________________
j)
Tin (IV) Oxide
_____Sn2O4_____________________
Part 3 - How many electrons will the following elements gain or lose in forming an ion?
7. calcium
2
8. Aluminum
3
9. fluorine
1
10. Oxygen
2
Part 4 - What will be the formula of the ion formed when the following elements gain or lose
valence electrons and attain noble gas configurations?
11. sulfur
S-2
12. Fluorine F-1
13. sodium
Na+1
14. Barium
Ba+2
Bonding Review KEY
15)
NaCl
_____Sodium Chloride___________
16)
CuCO3
____Copper (II) Chloride__________
17)
Ba(OH)2
____barium hydroxide____________
18)
Sn(HCO3)4
____tin (IV) bicarbonate ___________
19)
MgCO3
____magnesium carbonate_________
20)
KF
____potassium fluoride __________
21)
NH4Cl
____ammonium chloride___________
22)
FeO
_____iron (II) oxide_________
23)
Be3N2
_____beryllium nitride______________
24) A cation.,. D
a. is a compound composed of two different elements.
b. is any atom or group of atoms with a negative charge.
c. is a tightly bound group of atoms that behave as a unit and carry a charge.
d. is any atom or group of atoms with a positive charge.
25) A metalloid, .. D
a) is only group B elements
b) is only group A elements
c. is composed of a cation and an anion
d) has characteristics of both metals and non-metals
26) The Law of Definite Proportions
B
a), shows the number and kind of atoms present in a molecule of a compound.
b), states that in a chemical compound, the elements are always combined in the
same proportion by mass.
c. shows the kinds and numbers of atoms in the smallest representative unit of
the substance,
d) only applies to binary compounds
Bonding Review KEY
27) Define Polyatomic ion.
28) A binary compound
B
.a. is a compound composed of two different positive ions.
b)is composed of a cation and an anion
c, is a tightly bound group of atoms that behave as a unit and carry a charge.
d)is the same as a ternary compound
29) A transition element
D
a). usually forms anions when It reacts.
b)is a group A element only
c) is the same as a polyatomic ion
d) usually can carry more than one charge
.
30) The ionic charge of osmium, Os, in the compound Os3P is: E
a. 1+
b.1-
c.5+
d.3-
e. 3+
31} Which element when combined with chlorine would most likely form an ionic
compound? A
a) lithium b) carbon c) nitrogen
d) fluorine
32) What is the ionic charge of the Aluminum ion in the ionic compound
Aluminum oxide (Al2O3)
a) +2 b) -2 c) +3 d) -3
C
Bonding Review KEY
33) Elements in Group 5A:
B
a). form positive ions
b.) form negative ions
c) Do not commonly form ions
d. do not react with other element
34) The correct name for Pb3P2 is _____.
a.
Lead (II) phosphide
c.
b.
Lead (III) phosphide d.
A
Lead phosphate
Lead (III) phosphate
35) The correct formula for iron (III) chlorate is __________.
a.
FeCl3
b.
Fe3Cl
c.
Fe(ClO3)3
d.
FeClO3
e.
Fe3ClO3
C
36) Based on its location in the periodic table of elements, you could assume that
_______________ is the most reactive metal.
C
a.
helium
c.
sodium
b.
iron (III)
d.
calcium
37) As you move from calcium to bromine, the atomic radii will __________.
a.
increase
b.
decrease
c.
A
stay the same
38) An atom with 55 protons, 78 neutrons and 55 electrons will tend to do which of the following
during a chemical reaction? C
a.
lose 5 electrons
d) gain 1 electron
b.
lose 5 protons
e) loose 1 electron
c.
lose 1 electron
Bonding Review KEY
39) Based on its location on the periodic table, one could infer which of the following elements is
very unreactive? D
a.
calcium
c.
silicon
b.
potassium
d.
argon
40) Define the octet rule.
41) In what region of the periodic table are electrons being added to the d sublevel as atomic
number increases? D
a.
alkali metals
c.
transition elements
b.
actinoids
d.
metalloids
42) What gains electrons to form negative ions.
a. water
c. nonmetals
b. families
d. Metals
C