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Elements of Periodic Table Flashcards | StudBud
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Elements of Periodic Table
Elements of Periodic Table
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Properties of elements, valence electrons, trends of periodic table.
Flashcards
35 cards
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Questions
35
Answers
1
The element in period 4, Group 15 is ...
chlorine
arsenic
titanium
nitrogen
2
These elements are brittle and do not conduct electricity.
metals
nonmetals
metalliods
alkali metals
3
Which of the following elements has the same number of valence electrons as sulfur?
O
I
Ca
Li
4
In a Lewis Dot structure, each side can have no more than _____ electrons (dots)
3
8
2
1
5
The Lewis dot structure illustrates...
the number of protons in an atom
the number of ions in an atom
the number of electrons of an atom
the number of valence electrons of an atom
6
Phosphorus has 5 valence electrons.
True
False
7
Carbon has 5 valence electrons.
True
False
8
Dmitri Mendeleev was a Russian ___________.
biologist
mathematician
chemist
physicist
9
The periodic table is made up of mostly non-metals.
True
False
10
Which of the following elements has 3 valence electrons?
sulfur
boron
krypton
scandium
11
Neon has 10 protons, 10 neutrons, 10 electrons, and ____ valence electrons.
1
10
2
8
12
These elements are odorless and colorless.
halogens
noble gases
alkali metals
alkaline-earth metals
13
What is included inside the nucleus of an atom?
electrons and isotopes
protons and neutrons
neutrons and electrons
protons and electrons
14
Strontium is an example of a/an
metal
metalloid
nonmetal
noble gas
15
These elements are shiny, ductile, and opaque.
metals
nonmetals
halogens
metalloids
16
These elements like to react with the alkali metals.
noble gases
metalloids
halogens
transition metals
17
Every element in a group has the same number of _______________.
neutrons
electrons
protons
valence electrons
18
Noble gases are...
fairly reactive
react with halogens
typically unreactive
highly reactive
19
Sodium is in
Group 2, Period 1
Group 1, Period 3
Group 3, period 1
Group 2, Period 3
20
What element is the only element in Group 18 with 2 valence electrons?
Ar
Xe
He
Ne
21
The most reactive metals are the
earth metals
transition metals
alkali metals
alkaline-earth metals
22
The "staircase" is associated with which kind of elements?
metals
gases
metalloids
non-metals
23
How do you know how many valence electrons an element has?
type of element
you just guess
period #
group #
24
Elements are arranged _________ into 18 groups.
in pairs
diagonally
vertically
horizontally
25
Fluroine has _____ valence electrons.
9
7
11
5
26
Barium is the fifth element in Group 2. What is the atomic number of radium, the next element in Group 2?
64
74
103
88
27
How many valence electrons does sulfur have?
4
5
6
7
28
Which chemical group is called the halogens?
Group 2
Group 17
Groups 3-12
Group 1
29
Which element has the greater atomic number?
Neon
Fluorine
Nitrogen
Oxygen
30
Which part of the atom is used to determine how an atom will bond with other atoms?
valence electrons
neutrons
nucleus
protons
31
Elements are arranged horizontally into ___ periods.
18
7
12
6
32
Which of the following illustrates protons, neutrons, and electrons?
Lewis Dot structure
Bohr model
33
In the modern periodic table, elements are ordered according to
date of discovery
decreasing atomic mass.
increasing atomic number.
Mendeleev's original design
34
In which direction do we place valence electrons (dots) around a Lewis Dot structure?
left, then counter clockwise
right, then clockwise
right, then counter clockwise
any way we want
35
Helium, a noble gas, has 8 valence electrons, just like Argon.
False
True
