1.
The scientist whose alpha-particle scattering experiment led him to conclude that the nucleus of an atom contains a dense center of positive charge is
A.
J. J. Thomson
B.
Lord Kelvin
C.
Ernest Rutherford
D.
William Thomson
E.
James Chadwick
2.
We usually use the term ______________ for all forms of electromagnetic radiation.
A.
energy
B.
photons
C.
radiation
D.
light
E.
none of these
3.
A packet of energy of electromagnetic radiation is called
A.
a wavelength
B.
a wave
C.
a photon
D.
a proton
E.
none of these
4.
The form of EMR that has more energy per photon than X-rays is
A.
microwaves
B.
radio waves
C.
gamma rays
D.
infrared rays
E.
none of these
5.
The lowest possible energy state of an atom is called its ______________ state.
A.
excited
B.
base
C.
ground
D.
neutral
E.
none of these
6.
The energy levels of the hydrogen atom (and all atoms) are ______________, meaning that only certain discrete energy levels are allowed.
A.
varied
B.
quantized
C.
ramp-like
D.
continuous
E.
two of these
7.
The ______________ is a phenomenon that may be caused by the burning of fossil fuels, which increases the CO
2
content in the earth's atmosphere.
A.
acid rain
B.
greenhouse effect
C.
infrared radiation
D.
ozone problem
E.
none of these
8.
______________ is a form of oxygen that protects us from high-energy radiation emitted by the sun.
A.
Ozone
B.
Carbon dioxide
C.
Ultraviolet light
D.
Methane
E.
None of these
9.
The shape of an
s
orbital is
A.
spherical
B.
dumbbell shaped
C.
donut shaped
D.
conical shaped
E.
none of these
10.
As the principal energy level increases in an atom's orbitals, the average distance of an electron energy level from the nucleus ______________.
A.
increases
B.
decreases
C.
stays the same
D.
varies
E.
none of these
11.
A given set of
p
orbitals consists of ______________ orbital(s).
A.
1
B.
2
C.
3
D.
4
E.
5
12.
The maximum number of electrons allowed in each of the
p
orbitals is
A.
2
B.
4
C.
8
D.
18
E.
none of these
13.
The maximum electron capacity of an
f
sublevel is
A.
18
B.
14
C.
10
D.
6
E.
2
14.
A
d
sublevel can hold a maximum of
A.
5 electrons
B.
10 electrons
C.
14 electrons
D.
32 electrons
E.
none of these
15.
The maximum number of electrons allowed in the
p
sublevel of the third principal level is
A.
1
B.
2
C.
3
D.
6
E.
8
16.
The maximum number of electrons allowed in the fourth energy level is
A.
2
B.
4
C.
8
D.
18
E.
32
17.
Which of the following is an incorrect designation for an atomic orbital?
A.
1
s
B.
3
d
C.
1
p
D.
4
f
E.
6
s
18.
Sodium has how many electrons in its outermost principal energy level?
A.
1
B.
2
C.
6
D.
8
E.
11
19.
The electron configuration for the phosphorus atom is
A.
1
s
2
2
s
2
2
p
6
3
s
2
3
p
3
B.
1
s
2
2
s
2
2
p
6
3
s
2
3
s
2
3
p
6
4
s
1
C.
1
s
2
2
s
2
2
p
6
3
s
5
D.
1
s
2
2
s
2
2
p
6
3
p
5
E.
none of these
20.
The electron configuration for the carbon atom is
A.
1
s
2
2
s
2
2
p
2
B.
[He] 2
s
4
C.
[Ne] 2
s
2
2
p
2
D.
1
s
2
2
p
4
E.
none of these
21.
1
s
2
2
s
2
2
p
6
3
s
2
3
p
2
is the correct electron configuration for which of the following atoms?
A.
Al
B.
S
C.
Si
D.
C
E.
none of these
22.
The halogens (Group 7) contain how many valence electrons?
A.
1
B.
7
C.
0
D.
8
E.
none of these
23.
The elements chlorine and iodine have similar chemical properties because they
A.
are both metals
B.
are in the same chemical period
C.
have the same number of electrons in their outer energy levels
D.
have the same number of stable isotopes
E.
none of these
24.
The alkali metals have how many valence electrons?
A.
8
B.
7
C.
3
D.
2
E.
1
25.
The noble gases contain how many valence electrons?
A.
1
B.
7
C.
0
D.
8
E.
none of these
26.
All these atoms have seven electrons in their outermost energy levels
except
A.
H
B.
F
C.
Cl
D.
Br
E.
I
27.
Which element has the largest number of electrons in its valence shell?
A.
S
B.
As
C.
K
D.
F
E.
Fr
28.
When moving down a group (family) in the periodic table, the number of valence electrons
A.
remains constant
B.
increases by 2 then 8 then 18 then 32
C.
doubles with each move
D.
decreases regularly
E.
changes in an unpredictable manner
29.
Which of the following atoms has the smallest atomic radius?
A.
As
B.
Sb
C.
Bi
D.
P
E.
N
30.
Metal atoms tend to ______________ electrons and form ______________ ions.
A.
lose; positive
B.
lose; negative
C.
gain; negative
D.
gain; positive
E.
share; neutral
This is the end of the test. When you have completed all the questions and reviewed your answers, press the button below to grade the test.