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Periodic Table Flashcards | StudBud
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Periodic Table
Periodic Table
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Periodic Table Review
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
What do you call the energy required to remove a valence electron from an atom?
electronegativity
ionization energy
electron energy
electron affinity
2
What are argon, radon, and xenon?
noble gases
lanthanides
actinides
halogens
3
Which of the following has the smallest atomic radius?
chlorine
nitrogen
sulfur
fluorine
4
The most reactive group of the nonmetals are the...
halogens
lanthanides
rare-earth elements
transition elements
5
A positive ion is ___ than the atom from which it came.
smaller
larger
6
What did Mendeleev base his organization of the periodic table on?
properties
electron configurations
symbols
atomic numbers
7
A horizontal row in the periodic table is called...
a family
a group
a period
an octet
8
How many valence electrons does Bromine (Br) have?
18
17
35
7
9
Which is the element that has the greatest electronegativity?
chlorine
fluorine
oxygen
sodium
10
Elements in the same group on the periodic table can be expected to have similar...
number of neutrons
atomic masses
properties
atomic numbers
11
The elements in group 1 are known as the...
alkali metals
Period 1 elements
actinide series
alkaline-earth
12
Which has the higher ionization energy?
Sr
Ba
Be
Mg
13
compared to alkali metals, the alkaline-earth metals...
are less dense
have lower melting points
are less reactive
combine more readily with nonmetals
14
Which has the lowest electronegativity?
Co
Br
Ca
Se
15
The most characteristic property of the noble gases is that they...
are gases at ordinary temperatures
have low boiling points
are radioactive
are largely unreactive
16
Neutral atoms with an s2p6 electron configuration in the highest energy level are...
metalloids
nonmetals
metals
gases
17
Which set shows an increase in metal reactivity?
Ba, Ca, Al
Ba, Al, Ca
Al, Ca, Ba
Ca, Al, Ba
18
Periodic Law states that physical &chemical properties of elements are periodic functions of...
atomic structures
atomic radii
atomic masses
atomic numbers
19
Which element belongs to the alkaline-earth metals?
sodium
magnesium
aluminum
chlorine
20
Which is the best reason that the atomic radius generally decreases as you travel up a group?
number of energy levels decreases
number of neutrons increases
nuclear charge decreases
new octet forms
