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Periodic Table
Periodic Table
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periodic table of the elements test review Pearson Wilbraham chemistry
Flashcards
21 cards
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Questions
21
Answers
1
How many valence electrons does an atom of nitrogen have?
7
15
2
5
2
What measures the tendency of an atom to keep shared electrons near itself?
ionic radius
electron affinity
ionization energy
electronegativity
3
Which elements are shown as gray in image?
metalloids
alkali metals
inner transition metals
transition metals
4
What are valence electrons?
Electrons in the outermost energy level
Electrons in the innermost energy level.
5
Horizontal rows on the periodic table are called …
Groups
Classes
Periods
Families
6
Vertical columns on periodic table are called …
classes
groups
rows
periods
7
How is the modern periodic table arranged?
Increasing atomic number
increasing valence electrons
Increasing atomic mass
increasing energy levels
8
The most reactive nonmetal on the periodic table is
helium
astatine
fluorine
carbon
9
What is NOT true of the group of elements highlighted?
They are called noble gases
Most have 8 valence electrons
They all have a full outer shell of electrons
They are very reactive
10
What elements are located along the stair-step line?
transition metals
metalloids
metals
inner transition metals
11
The number of valence electrons increases as you move …
Down a group
There is no pattern in valence electrons
across a period
12
How was Mendeleev's periodic table arranged?
increasing energy levels
Increasing atomic mass
Increasing atomic number
increasing number of valence electrons
13
Which subatomic particle plays the greatest part in determining the properties of an element?
electron
neutron
none of these
proton
14
Elements in the same period have what in common?
Similar properties
Highest occupied electron shell
Similar Density
Number of valence electrons
15
How does atomic size vary down a group?
decreases
increases
varies
stays the same
16
Who created the first periodic table?
Dalton
Mendeleev
Bohr
Rutherford
17
Which of the following elements is a transition metal?
copper
potassium
sulfur
aluminum
18
Why is shielding constant across a period?
The atomic radius decreases.
The number of inner shell electrons doesn't change.
Electrons are added to different principal energy levels.
The charge on the nucleus is constant.
19
How does shielding vary across a period?
increases
varies
decreases
stays the same
20
What is the name of group 2?
Alkali Metals
Noble Gases
Halogens
Alkaline Earth Metals
21
What elements are to the right of the stair step line?
metalloids
metals
transistion metals
nonmetals
