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unit 4 elements and periodic table Flashcards | StudBud
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unit 4 elements and periodic table
unit 4 elements and periodic table
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#chemistry #periodictable #periodictrends #electrons
Flashcards
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Questions
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Answers
1
the most reactive group of nonmetals is
halogens
alkali
lanthanide
2
which block on the periodic table contains the transition elements
s
d
p
3
what is the maximum number of electrons in the second energy level
32
8
18
2
4
major difference between a 1s and 2s orbital
2s does not exist
2 s is a different shape
2 s is at higher energy level and further from the nucleus
5
Arrange the following elements in order of increasing electronegativity
Be, N, F
F, N, Be
N, F, Be
N, Be, F
6
what period is an element in whose electron configuration ends in 5p
5
5
7
2
7
for scandium ( #21) what is the notation for 3 highest electrons
4p3
4s23d1
4s24p1
8
according to quantum theory of an atom in an orbital
an electron has not energy
an electrons position can not be found
an electrons position can not be known precisely
9
which is a representative element
Ag
Na
Zn
La
10
An orbit describes the exact path of an object. An orbital describes...
the inexact path of an object
the probability of finding an electron in a space
the distance away from the nucleus
the number of electrons in a space
11
Which of the following is a member of the noble gas family and in the sixth energy level?
Kr
Xe
Rn
Ne
12
The smallest unit of light is called the...
photon.
corpuscle.
little bit.
atom.
13
How many
d
orbitals exist per energy level?
1
7
3
5
14
__________________ decreases as you move across a period.
ionization energy
atomic number
electronegativity
atomic radius
15
Which of the following is a metal?
Cd
Si
S
Se
16
if the highest occupied energy level is 5s
2
5p
1
what group does it belong to
group 2
group 5
group 13
17
the energy required to remove and electron from a gaseous atoms is
electron affinity
ionization energy
elecronegativity
18
He belongs to what group
alkali
alkaline earth metals
noble gases
19
for an atom to go from excited state to ground it must
emit radiation
emit energy
absorb energy
20
Which is the correct electron configuration for phosphorus?
1s22s22p63s13p3
1s22s2sp53s23p3
1s22s22p3
1s22s22p63s23p3
21
elements in the same group can be considered to have similar
atomic masses
properties
number of neutrons
22
what is the energy of a photon whose frequency is 1 x 10
14
5
9.9 x 10 -48
6.626 x 10 -20
23
cations have a ___ charge and are _____ than the atoms from which they are formed
positive , smaller
negative, bigger
positive , bigger
24
The periodic table arranges elements according to...
atomic number and similar properties
mass and similar properties
alphabetical order
mass and date discovered
25
What group is calcium in?
halogens
alkali metals
transition metals
alkaline earth metals
26
which element is found in the same period as Na
He
Mg
H
27
if one electron in an orbital has a clockwise spin what does the other have
zero spin
counter clockwise
also clockwise
either clockwise or counter clockwist
28
Arrange the following in order of increasing ionization energy.
Ba, Be, Ca
Ba, Ca, Be
Be, Ca, Ba
Ca, Be, Ba
29
Groups or families are represented by...
classes
periods
columns
rows
30
shape of porbital is
dumbell
propellor
sphere
31
which of the following describes a line emission spectrum
an excited element releases one photon of every color
an excited atom's electons arrange themselves in a line
an excited element emits all wavelengths like a rainbow
an excited atom emits only certain and consistent wavelength
32
what element has an electron configuration that ends in 5s
1
Rb
K
Cs
33
the energy of a photon is related to
mass
frequency
size
34
Groups or families are represented by...
classes
columns
rows
periods
35
why does atomic radii increase as you go down a group best reason
nuclear charge increases
# of energy level increases
new octet forms
36
which lists orbitals is the correct order in which they fill according to auf bau principle
1s 2s 2p 3s 3p 3d 4s 4p 4d 5s
1s 2s 2p 3s 3p 4s 3d 4p 5s
1s 2s 2p 3s 4s 3p 3d 4p 5s
37
the distance between two successive corresponding points on a wave( such as peaks , troughs)
quantum numbr
frequency
wavelength
38
what types of orbitals can be found in the third energy level
s
s,p,d
s,p,d,f,
39
detemine the frequency of light if the wavelength is 1 x 10
3
7 x 105
3 x 1022
3 x 105
40
how many valence electons does carbon have
4
1
6
2
41
what category is the majority of elements
nonmetals
metalloids
metals
42
How many valence electrons do alkaline earth metals have in their outer shell?
7
1
8
2
43
Which is true of carbon?
it has two "p" electrons
it has 4 more electrons than neon
it has electrons in the first three energy levels
its orbital diagram ends with 4 up arrows
44
Which is correct regarding the relationship between the energy and frequency of radiation?
Higher frequency radiation has more energy.
Frequency and energy are always equal.
Higher frequency radiation has less energy.
Frequency and energy are unrelated.
45
Is the chloride anion bigger or smaller than the atom
bigger
smaller
46
Which is the most reactive metal?
Ra
F
Fr
Li
47
Atomic radius increases as you move down a group because...
atomic number decreases
ionization energy increases
electronegativity decreases
energy levels increase
48
Electrons release light as they...
are added to an atom.
jump up to an excited state.
are removed from an atom.
fall back down to their ground state.
49
which represents the correct number of orbitals per energy level
s-1 p -3 d- 5 f- 7
s-3 p -3 d- 3 f- 3
s-3 p -3 d- 3 f- 23
s-1 p -2 d- 3 f- 4
