NAME:______________________________________
Mods:____________
BONDING UNIT HOMEWORK
1.
How many electrons must be LOST by each of the following metals to obtain a noble gas
electron configuration? Check that friendly ion card!
Ca
2.
Al
Li
Ba
Rb
Write the electron configurations for the following metal ions. What element do their
electron configurations match? Order of filling, if needed: 1s-2s-2p-3s-3p-4s-3d-4p
Al+3
#e-=
Element:
Ca+2
#e-=
Element:
3.
How many electrons must be GAINED by each of the following nonmetals to obtain a noble
gas electron configuration? Check that friendly ion card!
N
4.
S
Cl
P
Br
#e-=
F-1
#e-=
O-2
#e-=
Ne
#e-=
How many electrons do these elements gain or lose when forming an ion? Ion card!
K
6.
O
Write the electron configurations for the following. *Is there a pattern?
Order of filling, if needed: 1s-2s-2p-3s-3p-4s-3d-4p
N-3
5.
Ga
Se
Mg
As
Te
Write the FORMULA of the ion formed when the following elements become stable like a
noble gas. How many PROTONS and ELECTONS does each ion have?
Super-Friendly Ion Card and Periodic Table (atomic number)!
Cl
Formula:
Protons:
Electrons:
Mg
S
Al
Rb
Br
7.
Write the correct formula unit (fu!) for the following pairs of ions:
K+1, S-2
8.
Na+1, SO4-2
Ca+2, O-2
Sr+2, CN-1
Pb+2, I-1
Write the formula for the ions in the following compounds. Also, name the compounds!
LiCl
MgBr2
BaS2O3
PbS2
AlPO4
Ion Formulas:
Name:
9.
What elements are in the following alloys?
bronze
10.
stainless steel
brass
superalloys
Draw the Lewis-Dot Structure (for bonding) for these elements:
potassium
carbon
magnesium
oxygen
chlorine
krypton
11.
How many electrons are involved in a double bond? ________ in a triple bond? ________
12.
Classify the following compounds as ionic or molecular (covalent):
MgCl2
13.
14.
H2O
TiF2
CBr4
Identify the bond formed between atoms of the following pairs of elements as ionic,
nonpolar covalent or polar covalent. (The electronegativity tables will be helpful!!!)
H and Br
K and Cl
C and O
Br and Br
Li and O
Cl and F
Place these covalent bonds in order (1-5) of increasing polarity (electronegativity tables!!!).
H-F
15.
Na2S
H-Br
H-O
H-H
H-C
List the 5 possible shapes that molecules can have according to the VSEPR theory: