The Elements
Practice Test
1.
Which of the following is the general valence electron configuration for the alkaline earth elements?
a.
ns
1
b.
ns
2
np
1
c.
ns
2
d.
ns
2
np
2
2.
Which of the blocks on the periodic table contains the most elements?
SC.a.2.4.5
a.
d block
b.
p block
c.
f block
d.
s block
3.
Which of the following alkali metals is an important human nutrient?
a.
potassium
b.
rubidium
c.
lithium
d.
cesium
4.
Which of the following power sources makes use of the photoelectric effect?
SC.B.1.4.5
a.
diesel engines
b.
solar power cells
c.
nuclear power plants
d.
alkaline batteries
5.
How many valence electrons does a group 1A metal atom have?
SC.A.2.4.5
a.
4
b.
3
c.
2
d.
1
6.
The most abundant noble gas on Earth is _________.
a.
helium
b.
neon
c.
krypton
d.
argon
7.
An atom of an element contains eight electrons. What is the identity of this element?
a.
nitrogen
b.
carbon
c.
oxygen
d.
fluorine
8.
A lack of _______ can cause the thyroid gland to enlarge.
SC.F.1.4.1
a.
chlorine
b.
iodine
c.
fluorine
d.
bromine
9.
The Heisenberg uncertainty principle states that ____________.
a.
electrons of atoms in their ground states enter energetically equivalent sets of orbitals singly before they pair up in any orbital of the set
b.
two atoms of the same element must have the same number of protons
c.
it is impossible to simultaneously know the precise position and velocity of a particle
d.
no two electrons in the same atom can have the same set of four quantum numbers
10.
How many types of orbitals are present in atoms of elements in the third period of the periodic table?
SC.A.2.4.5
a.
4
b.
2
c.
1
d.
3
11.
The atomic radius generally _______________ on the periodic table.
a.
increases from top to bottom and from left to right
b.
increases from bottom to top and from left to right
c.
increases bottom to top and from right to left
d.
increases from top to bottom and from right to left
12.
What is the electron configuration for tin Sn?
a.
Kr
5s
2
3d
10
4d
14
5p
4
b.
Kr
5s
2
3d
10
4f
14
5p
2
c.
Kr
5s
2
4d
10
5p
2
d.
Kr
5s
2
3d
10
3f
14
5p
4
13.
Which one of the following d-block elements would most likely have colored compounds?
a.
zinc
b.
titanium
c.
scandium
d.
vanadium
14.
Which group on the periodic table is known as the halogens?
SC.A.2.4.5
a.
group 2A
b.
group 1A
c.
group 8A
d.
group 7A
15.
A wavelength of 500 nm is associated with the _______ portion of the electromagnetic spectrum.
a.
infrared
b.
visible
c.
microwave
d.
ultraviolet
16.
Which element has the lowest first ionization energy?
SC.A.2.4.5
a.
Li
b.
Na
c.
Cs
d.
K
17.
Which metal is the lightest?
SC.A.2.4.5
a.
magnesium
b.
boron
c.
aluminum
d.
lithium
18.
The majority of actinide elements are known as _________.
SC.A.2.4.5
a.
coinage metals
b.
transuranium elements
c.
halogen elements
d.
lanthanide elements
19.
What is the name for atoms of an element that have different masses?
SC.A.2.4.1
a.
allotropes
b.
isomers
c.
alloforms
d.
isotopes
20.
Why was Mendeleev's periodic table widely accepted?
SC.H.1.4.3
a.
He was the first to notice a pattern of similar properties among elements.
b.
His periodic table listed all of the elements in the correct order.
c.
He organized the first 14 known elements.
d.
He predicted the existence and properties of undiscovered elements.
