stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Periodic table and periodic trends Flashcards | StudBud
Explore
/
Periodic table and periodic trends
Periodic table and periodic trends
30 terms
·
StudBud Administration
·
199 plays
Imported from external platform
Flashcards
30 cards
F
Practice quiz
P
Host live
L
Questions
30
Answers
1
What is a "block" on the periodic table
One of the columns on the periodic table
elements whose outermost valence electrons occupy the same type of subshell
Alkali metals, alkaline earth metals, halogens, pnictogens, and noble gases
2
Which of the following statements about transition metals is true?
all of the above
they are all d- or f-block elements
they are strong, malleable, and ductile (able to be stretched into a wire)
They have incomplete d subshells or will ionize to incomplete d subshells
3
What makes the periodic table "periodic?"
it is organized by recurring or "periodic" patterns
all of the above
it is consulted periodically by scientists
it gets revised and updated every 10 years by the scientific community
4
What factor determines which elements are in a given period, i.e. all the elements in the same period have the same what
Number of protons
Number of electrons in the outer electron shell
Number of electrons
Number of electron shells
5
What is the electron configuration of magnesium (12)
[He]2s22p4
[Kr]5s24d105p5
[Ar]4s23d104p6
[Ne]3s2
6
What factor determines which elements are in a given group, i.e. all the elements in the same group have the same what?
Number of electrons in the outer electron shell
Number of electrons
Number of electron shells
Number of protons
7
Which element has the highest electronegativity?
Hydrogen (1)
astatine (85)
francium (87)
fluorine (9)
8
It's called the
periodic table
so it must be all about the periods, right? How significant are the
groups
?
Groups are most important: groups represent chemical similarities
Not very, they're just reference points for finding various elements
Kind of. Knowing group number lets us know the density of an element
Very: group number tells us the weight and size of an element
9
which does
not
always occur as we go from top to bottom of a given group of elements?
atomic number increases
atomic radius increases
chemical reactivity increases
atomic mass increases
10
Which statement is
false
?
Alkali metals are commonly found in nature in their elemental form
Transition metals make good conductors of electricity
Halogens are highly reactive
Alkaline earth metals are all relatively soft and silvery white in color
11
On the standard periodic table, the horizontal rows are called
periods
and the vertical columns are called
groups
True
False
12
What role do neutrons play in the periodic table?
they can affect the atomic weights listed in the table
they dictate the length of the periods
neutrons have no role at all in the periodic table
they dictate the depth of the groups
13
Without looking at the periodic table, which four elements are in the same period?
aluminum, indium, boron, thallium
arsenic, krypton, potassium, titanium
potassium, arsenic, krypton, thallium
Aluminum, arsenic, boron, indium
14
In a neutral atom, the atomic number is also the number of electrons in an atom of that element.
False
True
15
The lightest elements are at the top of the periodic table and the heaviest are at the bottom
False
True
16
Without looking at the periodic table, which four elements are in the same group?
Aluminum, arsenic, boron, indium
aluminum, indium, boron, thallium
potassium, arsenic, krypton, thallium
arsenic, krypton, potassium, titanium
17
What is the electron configuration of oxygen (8)
[Ar]4s23d104p6
[Ne]3s2
[Kr]5s24d105p5
[He]2s22p4
18
The standard periodic table lists elements from left to right, top to bottom, in what order?
increasing reactivity
Alphabetical order of symbols
decreasing valence
increasing atomic number
19
What is the electron configuration of hydrogen (1)
[He]2s22p4
1s1
[Ar]4s23d104p6
[Kr]5s24d105p5
20
which group of elements has the highest
ionization energy
transition metals
alkali metals
halogens
noble gases
21
What is the electron configuration of krypton (36)
[Ar]4s23d104p6
[Ne]3s2
[He]2s22p4
[Kr]5s24d105p5
22
Which group of elements includes the snobs of the chemical world, which almost never form compounds with other elements?
the noble gases
the halogens
the alkali metals
the alkali earth metals
23
Which does not occur as we cross the periodic table from left to right in any given period?
atomic number increases
atomic radius increases
atomic weight increases
atomic mass increases
24
Based on the rule of octaves, G. Lewis described
the octet rule
, which states
the transition elements are inherently unstable
atoms with eight neutrons in the nucleus are most stable
no more than eight chemists should ever try to sing together
in bonding, atoms always try to achieve noble gas configuration
25
What is the electron configuration of iodine (53)
[Kr]5s24d105p5
[He]2s22p4
[Ne]3s2
[Ar]4s23d104p6
26
What is the purpose of the periodic table of the elements?
all of the above
to illustrate certain properties of and relationships among the elements
to annoy high school chemistry students
to provide an easy way to memorize the chemical symbols
27
What is an element?
one of the more than 100 fundamental building blocks of matter
atoms whose nuclei all contain the same number of protons
a substance composed of atoms all having the same atomic number
all of the above
28
Which element group is highly reactive and includes neither metals nor metalloids?
Noble Gases
Pnictogens
Halogens
Chalcogens
29
What are valence electrons?
the electrons in an ion
the lowest-energy electrons of an atom
the highest-energy electrons in an atom
the electrons that participate in chemical bonding and reactions
30
Right now we're wallowing in molecules of two nonmetals that head up the groups known as
pnictogens
and
chalcogens
:
nitrogen and oxygen
Hydrogen and helium
boron and beryllium
fluorine and carbon dioxide
