Chemistry-l1
Unit 1: Atomic Theory
Periodic Trends Test Review
A, Fill in the blanks:
a) Elements within a group have the same number of
b) The most reactive element in Group
Vrt*, E[r&^t
17 is
c) Group 18 elements arc called
d) A colorcd element usually indicates a
e)
The majorityof elements inthe
f)
Elemenb of Group 3-12
Oeri$Pble
-l
are called
B. Multiple choice:
1. Which of the following statements is TRUE?
a) metals and nonmetals get more reactive fuom the top to the bottom of a group
b) metals and nonmetals get less reactive from the top to the bottom of a group
c) allnonmetals are unreactive
going down a group, nonmetals incrcase in
@netals increase in reactivity
reacturty golng up a group
2. Elements in the same family have similar
a) atomic masses
c)
e)
isotopes
ionization energies
umber of electrons in the outermost energy level
nuclei
3. An element which forms compounds readily with neon
a)
4.
oxygen
b) sodium
c)
helium
is
d) hydrogen
@noneofthese
A substance reacts vigorously with water. This element belongs to
a) orouo 7 of the Periodic Table
6[-groi,p 1 of the Periodic Table
period 1 of the Periodic Table
Y
d)
noneofthese
5. An element has the following configuration:
1s22s22p63s23p2. lt would have chemical prcperties similar to
the element whose electrcn configuration is
ls22szlpo c)
1s22szlPol5z3pt
6, An element has the following electron configuration:
1s22s22p63s23p1.
b)
a) lsz2szlPolsz3P+
electrons to be removed would be fuom
c)
b)
a) 1s
2a
7. The member
membeffi
2p
d)
@ts'zs'zo'
lf it were to lose electrcns, the finst
@+
3s
of the noble gas family that does NOT have the same number of valence electrcns as the other
ffrelium b)neon c)argon
d)
krypton
e) xenon
.
8. An atom of an element forms a stable ion by easily Fiiig 2 electrons. The element forms an ion of
(nl)Z* charge ard is in group 2
a) 2- charge and is in group
c) 2- charge and is in group
d) 2+ ctrYge and is in group 12
2
12
9.
Several tests were made on an element to determine its chemical and physical pmperties. The following
properties were found: very dense, good electricalconductor, shiny surface, and liquid at room temperature.
probably
,,\
lead b) carbon Qlknercury
The element is
a)
d)
iodine
e
bromine
10. An ion of element X has two more electrons than protons. Element X would
b) be metallic
d) unreactive
be a noble gas
be found in group
t6
C. ShortAnswer
the table below:
1
Atomic
Number
#of protons
Mass
fiof neutrons
flof electrons
Element
Number
25
1?
12
35
lz
13
35
43
l2
go
l4q
Br-
2. What is an orbital? Give the names of the four tyoes of orbitals we leamed about with the maximum /1
numberofelectronseachcanhold.
trafb
p*hLilrt7 ulwe
{ $ion ,l'
Giiue th6
fullelectron configuration for Ge, 31 Cu
1,
>,r
Give the noble gas shorthand configuration for Mn
.P
5. Draw an energy level diagram for Se
(-r,r
a, "t"lro"
#"J.
Is"Z'2re&" +nb'*/F*p'
ls'2"' 2pL 3t" *'l1"tgn ,li S"'
ls'zst463rt
*,lr'AJ'b
6. Draw an orbital filling diagnam for Cl '.
7. Using the pattem of electron configuration endings in the periodic table, give the element with the ending:
a)
b) 4p2
c) 4d6
d) 5p
e) 3d2
0 6p6
3s1
8.
Explain, using an orbitalfilling diagram, why chromium is an exception to the periodic table electron
configuration pattems.
9.
Give one major characteristic for each of the following chemical families:
alkali metals, alkaline earth metals, tnansition metals, halogens, noble gases
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