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Periodic Table Flashcards | StudBud
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Periodic Table
Periodic Table
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A review of the arrangement and trends of the periodic table.
Flashcards
35 cards
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Practice quiz
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Questions
35
Answers
1
Which scientists arranged elements according to atomic number?
Mendeleev
Dalton
Moseley
Richard
2
Which of the elements has the lowest ionization energy?
Li
Ne
B
F
3
Which element is brittle and not a conductor of electricity?
Co
P
Ca
Ag
4
How many valence electrons do the alkaline earth metals have?
8
7
2
1
5
How many energy levels does an atom of nitrogen have?
2
5
15
7
6
Which of the following is a product of the alpha decay of uranium-238?
242Th
238U
234Th
beta particle
7
Which of the following is a product of the beta decay of K-40?
Ca-40
K-41
K-39
Ca-36
8
Which of the following elements has 4 energy levels and 6 valence electrons?
C
Po
Se
Br
9
Mn-56 has a half-life of 2.6 hr. How much of a 30 mg sample is left after 10.4 hr?
3.75 mg
7.5 mg
480 mg
1.875 mg
10
Which set of symbols represents atoms with valence electrons in the same energy level?
Be, Sc, Te, Xe
Sr, Sn, Pd, Rb
F, I, Cl, Br
Sn, C, Pb, Ge
11
Which of the following elements has the highest electronegativity?
S
Al
Mg
Ar
12
How many energy levels does an atom of neon have?
None of the above
2
10
8
13
Which of these elements has 6 valence electrons?
Oxygen
Krypton
Barium
Carbon
14
Which element has 3 energy levels?
Li
Fe
Ga
Na
15
Which element has the highest ionization energy?
Zn
Kr
Br
K
16
How many valence electrons are in an atom of aluminum?
3
13
27
8
17
Which element has the lowest electronegativity?
P
Si
Mg
Ar
18
Which element has the lowest ionization energy?
Cr
K
Cu
Kr
19
What group of elements does iron belong to?
alkali metals
halogens
transition metals
alkaline earth metals
20
Which group of elements has 7 valence electrons?
Lanthanide metals
Transition metals
Halogens
Alkali metals
21
A sample of Ra-226 decays from 75 g to 9.375g in 4.8 x 10
3
yr. What is the half- life of Ra-226
1.6 x 103 yr
3.5 x 103 yr
2.4 x 103 yr
1.1 x 103 yr
22
Which configuration is incorrect?
[Kr]5s24d3
[Li]2s22p4
[Ar]4s23d5
[Ar]4s2
23
Which period 4 element has the most metallic properties?
Ti
Fe
Br
K
24
How many valence electrons does an atom of sulfur have?
6
16
32
2
25
Th-234 has a half-life of 25 days. How much of a 500 g sample will remain after 100 days?
125 g
31.25 g
1000 g
62.5 g
26
Which of the following is the correct electron configuration for nickel?
1s22s22p63s23p64s23d8
1s22s2p63s23p64s10
1s22s22p63s23p64s24d8
1s22s22p63s23p64s25d8
27
Which element is most metallic?
Ba
Ge
Zr
Cu
28
What is the electron configuration of Mg?
[Ar]
1s22s22p63s2
1s22s22p6
1s22s23s2
29
What element has the configuration [Ne]3s
2
3p
3
antimony
phosphorus
arsenic
nitrogen
30
Which scientist grouped elements in columns based on similar properties?
Richard
Dalton
Moseley
Mendeleev
31
Which element has chemical properties most similar to lithium
Be
Ca
Na
Ne
32
Which element has the greatest tendency to attract electrons?
fluorine
argon
neon
chlorine
33
Which of the following elements has the largest atomic size?
Fluorine
Iodine
Bromine
Chlorine
34
Which of these elements is a halogen?
Mg
K
Kr
Cl
35
Which element has the electron [Ar]4s
2
3d
7
?
Rh
Co
Ca
Ni
