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Unit 3 Periodic Table Review Flashcards | StudBud
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Unit 3 Periodic Table Review
Unit 3 Periodic Table Review
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Questions
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1
Which set of elements have the most similar chemical properties?
Si, As, Te
P, S, Cl
Cl, Br, I
Na, Ni, N
2
As atomic number increases across period 3, ionization energy
increases and electronegativity decreases
decreases and electronegativity increases.
increases and electronegativity increases
decreases and electronegativity increases
3
Which element is a diatomic gas at STP?
Krypton
Carbon
Chlorine
Helium
4
Using the properties on the table below, which element is most likely a metal?
D
A
C
B
5
Which group of elements contains a solid, a liquid and a gas at STP?
17
12
1
16
6
Why does the atomic radius increase as elements go down a group?
The nuclear charge increases
The electronegativity increases
There are more valence electrons
the number of principal energy levels increases
7
The modern periodic table is arranged according to
Atomic Mass
Atomic number
Oxidation number
Mass Number
8
Which element is a liquid at STP and conducts electricity?
Copper
Mercury
Bromine
Potassium
9
A given element M combines with calcium according to the formula: NaM. Element M could be a(n)
Alkaline Earth Metal
Halogen
Transition Metal
Nobel Gas
10
Which element has the highest atomic radius?
Te
Po
Sr
Ba
11
Which element would most likely be found alone/uncombined in nature?
Ne
Mg
Cl
Na
12
Which list of elements contains a metal, nonmetal and metalloid?
C, Si, Sn
P, S, Cl
Ca, Ag, Po
Cr, Mn, Se
13
Which two groups contain metals that are so reactive that they occur naturally only ascompounds
1 and 17
1 and 2
11 and 12
1 and 11
14
The observed regularities in the properties of the elements are periodic functions of their
oxidation states
mass numbers
non-valence electrons
atomic numbers
15
Which element is the most reactive metal on the periodic table?
Iron
Fluorine
Francium
Sodium
16
Which element is in Period 6 and Group 2 of the Periodic Table?
Radon
Radium
Barium
Boron
17
What is the number of electrons found in the valence shell of a halogen in the ground state?
8
1
2
7
18
Gallium is a Group 13 element because...
it has 3 electron shells
it is a metalloid
it has 3 valence electrons
it has 31 protons
19
Bromine is a Period 4 element because
it has 35 protons
it has mass number of 80
it has 4 electron shells
It has 4 valence electrons.
20
In what group could a brittle and dull element be found?
Group 11
Group 16
Group 1
Group 5
21
On the periodic table, an element classified as a metalloid can be found in
Period 2, Group 14
Period 4, Group 15
Period 6, Group 15
Period 3, Group 16
22
Given the chemical formula XCl
2
, to what group of elements could element X belong to?
Group 16
Group 13
Group 1
Group 2
23
Compared to an atom of magnesium, an atom of calcium has
1 more electron shell
the same number of protons
The same number of electron shells
1 more valence electron
24
The elements in group 2 are classified as
metals
nonmetals
metalloids
noble gases
25
Compared to the metals in period 4, the nonmetals have
Smaller atomic radius
Lower electronegativity
Lower ionization energies
More metallic character
26
Which element conducts electricity in solid and liquid form and forms colored ions in solution?
C
Zn
Ca
I
27
Which element has the greatest attraction for electrons in a bond?
Cl
Si
S
Mg
